1) I agree (although some call me a calvinistic thinking person) that the blood was shed for all. So does TCassidy and all particular Baptists.
2) There is a limit to atonement (that which you are attempting to refute above) and that limit is not blood, but that limit is on belief.
3) Belief (faith) is not gained by humankind, it is granted by God as a gift. It is granted and results in repentance, just as Romans discusses.
4) The reassignment of the limit from the atonement to the belief does not mar nor does it destroy the other points of the presentation of Scriptures as supported by the Doctrines of Grace.
I have NEVER met a Baptist who does not agree on the following:
One is still born and sinful to the point that they are completely incapable of "coming to God" and therefore, God must do the work as the AUTHOR of salvation.
One is still endowed by God's grace (unmerited favor) that the Holy Spirit will take the time to use the Scriptures to awaken that person to the claims of the Christ upon his life and living.
One is still preserved and perseveres in the faith in which God grants until such a believer is brought into God's presence.
One is still elected by God as an adopted child and is not born by the flesh, the will, or the human strength, courage or the passion of the humankind.
Now, put away your desire to refute and embrace the truth of Scriptures.
A true Baptist is a calvinistic thinking person in the areas of sin, election, grace, belief, and the security.
Fact is that even the Baptist modernist who would provoke animosity against the Doctrines of Grace will agree with the basic truth of at least 4 of the 5 points of calvinists. And, what is remarkable, when the limited atonement is properly expressed as limited belief, there is total agreement or at least acknowledgement that the Doctrines of Grace are in fact Scriptural.