Why so much inital timing???

Well, considering the cam is a custom grind, I don't believe the cam is too big at all. I'll have to dig up my last compression test numbers. The motor's an absolute screamer. I can't wait to see what it does at the track. Seems to do alright on the street.
It's fine. I run mine at 25*/35* 9.3:1 stock 360 Magnum, 234@.050 108 LSA. Car hauls a$$. If it ever wears out I'll put a better piston in it.