in regards to the kick drum - you need to identify the strong points of each and eq around that

for a 3 kick layer try eqing one to just produce the high klick and slap
eq another for the mid bang and the 3rd for the low end sub.

like i said you need to identify which contains the nicest frequencies for each eq job.

when i choose kicks ill usually choose some that are already rich in certain frequencies so as to keep eqing to a minimum.

you should also send all 3 to a group bus and compress them together

try these settings - threshold -6, ratio 3:1 to 5:1, attack slow (this lets the initial click thru and release long(ish) (this helps to gel the lower frequencies)