well since its not a race car only i would be shooting for 10:1 compression, .340-360 lobe lift (.475-520 valve lift), 240-248 * @ .050 104-106LSA.
well cc the head and then find out what head gasket your using... that will give you your current compression, then figure out how much to take off the block... im guessing about .110 tho... mine was .180 in the hole, i took .110 off the head and it gave me 9.2:1...