Very common situation. 1 limper in EP, we are in the CO/BTN. Assume all players after us are loose (blinds defend 60%, BTN might cold-call something like 40%). Assume little postflop fold-equity, and that we play better than all 3 or 4 of our opponents.

Question: How much hot-cold equity do want preflop to make raising ideal? (And probably the better question is, how much edge?) Theoretically, with 4 people including ourselves, >25% suffices, but SSHE suggests exploiting bigger edges in it's description of the TT hand on a 876 board. How big of an edge should we want?

My homework:
P1 (limper): 37% of hands
99-22,AJs-A2s,K2s+,Q2s+,J5s+,T6s+,96s+,85s+,74s+,63s+,52s+,4 3s,AJo-A7o,K9o+,Q9o+,J8o+,T8o+,98o

P2 (sb): 60% of hands.
99-22,AJs-A2s,K2s+,Q2s+,J2s+,T2s+,94s+,84s+,73s+,63s+,52s+,4 3s,AQo-A3o,K5o+,Q6o+,J7o+,T8o+,96o+,85o+,75o+,65o,54o

P3 (BB): 60% of hands
99-22,AJs-A2s,K2s+,Q2s+,J2s+,T2s+,94s+,84s+,73s+,63s+,52s+,4 3s,AQo-A3o,K5o+,Q6o+,J7o+,T8o+,96o+,85o+,75o+,65o,54o

P4 (us):

A7o: 29%
K7s: 26.3%
55: 26.1%
JTo: 26.6%
87s: 23%

Question: Are there any hands we should limp here on the CO/BTN?
Question: Comments on my current strategy? (I iso-raise with as bad as A3o, but try to keep it at A7o or better. I iso with K7s, JTo, and 87s. I limp with 55-.) My postflop strategy involves betting flops in which I have reasonable equity (gutters, OESD, overs), checking ones in which I have very little (single over card and complete whiffs), and no slowplay.

with no cow or moo theme in the thread title i'm going to have to lock it. please re-post.