PISTONS: Flattop or Dish for stoker....

What is the highest static compression that I can get buy with and still run pump gas (93 octane)? If you look at the particulars of my build, I am using a 360 block hopefully at .030 over and Ebrock heads. If I use a set of Probe flattops they have a 5.5 cc valve releiefs. Doing the math with the following assumptions:

Bore: 4.030
Head CC: 65
Bore of head gasket: 4.19
Thickness of head gasket: .039
Zero deck
piston volume: 5.5 (Probe flattops)

I get a 11.55 static Compression ratio.

I have always heard that due to heat disapation that you could run 1 pt higher with aluminum heads. This would mean 10.55 iron head equivalent.

Also, I know that these strokers like cam duration, so if I run a cam with at least 250 degress of druation @ .050 then I should bleed off some cylinder pressure.

So, do you think with this bottom end and cam, I could run pump gas or should I build with a set of dished pistions and get my compression down in the 10:1 static range?