How far will you go? (straight flush)

[beekeeper]

Playing small stakes limit hold'em, though I would also be interested to know how people play this in small stakes tournaments.

How far will you go if you have 4 to the straight flush but are holding 2 little suits in your hand. It seems like these pots can get expensive, but you're drawing to the absolute nuts.

Will you call 3 bets on the flop? Cap it? What about on the turn?

I know I'm not being specific, but this has happened to me more than once in different circumstances. I will bet & call on the flop, but get scared off if betting is heavy on the turn.