10-20 hand 67s in SB, good or bad?

[nykenny]

usual loose 10-20 holdem. most of everyone is fishy. 1.5 tough spot. one EP limper, good player raises in MP, his raise here means AA-99 or two big cards. (his weakness is auto bet on flop at not so threatening boards). i call with 67s in SB (took a peek at BB and he was calling). BB called. what do you think of this call?

flop comes 246 rainbow. i check, bb checks, EP checks, MP bets, i raise, all fold to MP. MP makes a subtle motion to grab more chips and then just calls. i am fairly certain that he knows i would catch this mannerism. so i decide he doesn't have an over pair. classic tell?

turn brings 9 makes flush possible. i bet without any hesitation. he calls.

River 8, completes the flush. i bet.

comments? result to follow.
Kenny