God knew this with express, explicit, infinite, foreknowledge, and He did it anyway!
From our perspective, as humans thinking in the flesh with our sin-cursed mind that has suffered the effects of the Fall of Adam, it may be the only way we can think about it is how God must have Actively Acted(?) in His having "ALLOWED CERTAIN THINGS" to happen, without our thinking being Enabled by the Holy Spirit.
The Holy Spirit Makes it possible for us to be Able to place God's Passive Decrees in our heart and soul, as simply being for HIS ULTIMATE GLORY.
Then, that is still while He still Holds all of the Guilty sinners Responsible for their own personal sins, which they will Suffer in The Lake of Fire, unless the are Saved by THE SAVIOR, Who, died, was buried, and rose again the third day, as a Perfect Sacrifice, in Place of their State of Guilt before the Judge of the Universe, TO SAVE THEIR SOUL.
Why would a God who says He loves us, create beings he knew from infinity, would cause such staggering, living torture?
I'm not sure what you mean by "God Who Says He Loves us". Where does the Bible say God Loves everyone, if that is what you're saying?
Do you think God Loves you? He let's you enjoy the rain and the sunshine and your own personal grasping around at what you may sense as being a Mightier Being to Whom you feel Accountable.
God Uses His Word to Visit people in their own Conscience, but also He Reveals Himself through His Creation.
18; "For the Wrath of God is Revealed from Heaven
against all ungodliness and unrighteousness of men,
who hold the truth in unrighteousness;
19; "Because that which may be known of God is manifest in them;
because God hath Shewed it unto them.
20; "Because the Invisible things of Him from the Creation of the World
are clearly seen, being understood by the things that are Made,
even His Eternal Power and Godhead;
so that they are without excuse:
21; "Because that, when they knew God,
they glorified Him not as God, neither were thankful;
but became vain in their imaginations,
and their foolish heart was darkened.
22; "Professing themselves to be wise, they became fools,
23; "And changed the Glory of the Uncorruptible God
into an image made like to corruptible man, and to birds,
and four-footed beasts, and creeping things."
Who put that 'Consense' their in our own head, to speak to us, a Warning?
Our Creator and we will meet with Him One Day, face-to Face, whether we are Prepared to Meet our Maker, or not.
Did Adam and Eve have free will? Could they have decided to obey God and thus we’d all still be kicking it in Eden to this day?
God Chose to Create a living entity, or 'being' apart from Himself, to Worship and Commune with God throughout Eternity.
However, the Extent of the Glory that would Please God would be less, for that Worship and Fellowship to come from a Created Being that had been Confirmed in their State of Innocents, like the Angles, or one simply like that of a robot, than from a Blood-Bought, Eternally, Saved soul, by the Blood of Jesus Christ.
In order for that Created being to Worship and Commune with God throughout Eternity to not be a Created Being that had been Confirmed in their State of Innocents, like the Angles, or one simply like a robot, with no ability to choose one way, or the other, that newly Created 'being' would have to be Made Mutable, that is to say that Adam was not only Given the "Free Will", as you say, but he actually had the choice Given to him of The Tree of Paradise, ot The Tree of the Knowledge of Good and Evil.
Adam was Given the Ability to choose one thing over another and he did.
In the eventuality of his life in the Garden of Eden, Adam chose to Rebel against God's All-Powerful Command and sin.
And, it had been me or you there that Day, we would have eventually chosen to not remain in Perfect Innocence, therefore, wherein Adam sinned, we all sinned in Adam, as if he were us.
Then, whether it was Adam, or us, there has now been a Change to our State of Nature, where we are sinners against God in every heartbeat, or breath, and would have never had to be 'taught how to lie, or steal', etc. We are all Natural Born children of Adam and we have all Inherited our Nature to Naturally sin from our Greatest-Great Grandfather, Adam.
God is Holy and Perfect and NOTHING SINFUL will be Entering His Heaven. And God Runs Heaven.
That sin would have to be Atoned for in another Manner, IF ANY HUMAN BEING COULD EVER GO TO HEAVEN WHEN THEY DIE, and it was, FOR GOD'S CHOSEN CHILDREN.
God Provided a Lamb. A Lamb Slain from the Foundation of the World.
Revelation 13:8;
"And all that dwell upon the Earth shall worship him,
whose names are not Written in the Book of Life
of the Lamb Slain from the Foundation of the World."
Did Lucifer have free will? If he did, would God have had to make a Lucifer 2.0 to carry out the rest of the Biblical plan?
With the '2.0'. No, no 'plan 2.0'
Without the '2.0' being meant to have been put in there,
Did Lucifer have free will? If he did, would God have had to make a Lucifer--- to carry out the rest of the Biblical plan?
Apparently.
I hope you're not trying to exalt a Doomed enemy of God, as if God couldn't have done without him.
God has Infinite Choices, including to Make the Choice to NOT Do ANYTHING Against His Perfect, Sinless, Nature and Essence.
an infinite God without limitations
God has Infinite Choices, including to Make the Choice to NOT Do ANYTHING Against His Perfect, Sinless, Nature and Essence and EVERYTHING WILL COME TO PASS, in the same way that we saw Jesus,
"being Delivered by the Determinate Counsel and Foreknowledge of God," Acts 2:23, which explains it all.
You Must Be Born Again.
