Thanks for the information. I have been block, filling, sanding, blocking and filling all day; have about 1/2 the car done (probably less actually). The "concept" I have arrived at is that I am filling all the low spots, bringing them down as level as possible. I have has a few high spots which I tapped down and then skim coated over. Speaking of that, by the time I am done I will have skim coated a good portion of the car, however I was thinking the poly would do some of that. Regardless, this is where I am and how I am proceeding. My one question/problem is that after I fill an area and knock it down, I am not real sure it is level or will not look bad/weird once I put 2K and paint on it. I don't really want to have to continue to fill and such with the 2K; perhaps a small pin hole or something but I should not be filling at that point (at least in my mind, that is how I see it). I certainly could but to my mind it should be about ready or very close.
On a positive note, the poly sands really well and blocks out nicely. In hind sight I am thinking I should have done the 2K, then did all of the filling, then the poly and blocking followed by epoxy and top coat. Too late now, I am on a path. I think it will come out ok (at least I hope so), its just in the current state I am seeing every imperfection.