That much gasket will kill your quench effect. With +.020 deck height and .093 gasket, gives you a .073" quench and this will cause your engine to be detonation prone.
Thats another thing that worries me. I would be going with a smaller cam at the same time and may end up with just as much cylinder pressure. I had a iron headed 440 with pistons .090" in the hole (TRW L2266Fs) and milled heads thin gaskets for compression. Even with a 244 @.050" cam on a 108lsa it would detonate with out race gas. Of coarse now Im older and a little wise (just a little) and I dont think I had the detonation problem till I changed the distributor and the car started running warmer.
Maybe I just need a second car. 1 race car 1 street car, LOL