KA24DE Metal head gasket question?

hi guys

i recently looked into ordering a metal head gasket for my KA-T build. i am thinking of ordering this exact kind its a Cometic Multi layer steel head gasket.

heres the link to a pick and some stats:

My question is how thick should i get it? i am going KA-T remember and i know that a thicker head gasket will decress the compression a little bit, but how thick should it be? the size i am looking at is 0.040 inches is that thick enough?

has anyone had experience with these gaskets? if so which thickness should i go? i heard that you should stay as close to o.e.m thickness as possible but i also heard a thicker head gasket will decress the compression a littlw bit, which would be good cuz i am turboing the motor?

What size pistons you getting or are you using the stock pistons?