hey guys wats up?

wats up guys? i have a b18c in my eg hatch which is soon to be built. i was wanting to go all motor (prefference) with 12.1:1 pistons but dont know anything about high compression engines. my first question is (a) would it be worth it? (b) wat should valve clearance be? if any changes? is there anything i shoud be extra carefull about? any and all help would be greatly appreciated. again thanks guys