pistons for b18c1

sup guys,

i had a question, i'm going to replace the pistons/rods in my b18c1 with a je/crower combo and i want to lower the compression because i got a F-Max turbo kit.

1st question is on the size of the piston.. i want to keep the stock bore size (minor honing done) and was wondering what size pistons do i have to get?

I will be getting AEBS sleeves at a later date, can't afford it at the moment.

2nd question, F-Max sent me a thicker head gasket, can i use this in conjuction with the pistons to further lower it and have a healty setup? (taking that pistons lower from 10:1 to 9:1 and taking that a 8:1 - 8.5:1 = healthy turbo setup).

Thanks for the info.