Stay at 11.5:1 or under 12:1 c/r
pct's will be fine for most cams, you just might have to clay your motor depending on your cams to figure out how much clearance your dealing with.
I recommend a gsr/b16/itr or 2000 crv oil & water pump & timing belt. I also recommend arp rod bolts professionally installed by arp specs...
You will have to have your machine shop mill 1mm from each side of your pct or p30 pistons to fit your ls rods.
Also they will have to install & strech your arp rod bolts along with hone your cylinder walls.
Honestly if you plan on going into it this much, I would purchase a b16 head & build an ls/vtec setup
Good Luck.