And a bunch of other weird doctrines.
I am. But I see very little congruency between those hazy (not in the Bible, not in church history books that I have) events and the book of Revelation. Where were the meteors, the creatures from the abyss, the third part of mankind dying, etc., etc.? And the date of AD 66 is very handy for the preterist, despite the fact that I only know one single scholar who agrees with that, and he is a liberal. No, the correct date is 95-96, as all evangelical scholars of the book agree. The only way the preterist can avoid the implications of Revelation to their position is to join the liberal and date the book before AD 70.
Now that is a big problem for you. When Jesus appeared to the disciples after His resurrection, He clearly told them in Luke 24 that he was not a "spirit," but ate to prove he was flesh and blood.
39 Behold my hands and my feet, that it is I myself: handle me, and see; for a spirit hath not flesh and bones, as ye see me have. 40 And when he had thus spoken, he shewed them his hands and his feet. 41 And while they yet believed not for joy, and wondered, he said unto them, Have ye here any meat? 42 And they gave him a piece of a broiled fish, and of an honeycomb. 43 And he took it, and did eat before them.
And in John 20:27 He told Thomas to touch His physical body: "Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing." There is no "in-between" existence in the Bible--not a spirit but not physical.
You have accused other full preterists of Gnosticism, but your position on this certainly sounds like Gnosticism, which postulated various "demiurges" between God the spirit and man the physical.
As for the angels, if they do not have physical existence, how could Jacob wrestle with an angel for hours, then have the angel tell him to let him go? I was a wrestler for 5 years in high school and one college tournament, and wrestling is the most physical thing I have ever done. You can't wrestle (and you can't eat) unless you are physical.