You raised too much preflop and are now looking at a hge pot that is likely to get you in trouble. A good sized raise (3bb + 1 for every caller) would've been enough. As it stands, you're likely not to have enough money for a third bullet by the river. Plus, such a huge bets announces a high pocket pair, someone with 2 pairs might stay in and outdraw you to the boat thinking he has you beat...
With that in mind, you cannot let this pot go away from you: it's juicy and you have a hand that is well disguised: bet just enough to get the draws out of there (3/4 as was suggested) and maybe get one of them to fold (thus making it even more incorrect for boat/straight draws to chase). Taking this pot down right now is the ideal scenario. If you get check/raised (or check/shoved as it stands), you're either in front or somebody has already flopped the straight and at best you're a 33% favorite to complete your boat (I'd fold to this as I wouldn't have the proper odds)
If the turn pairs the board, you're probably golden or you have already lost (and will get felted), nothing to be ashamed of here; if the 9 comes, well it was nice but you gotta let it go (check/fold). Another move would be to shove right there and get our money in while we're in front, but I really don't think that the added fold
equity works out in the long run since if the SB call, the BB is likely to call (since he'll get somewhat good odds to draw).
Tricky hand that warrants agression right on the flop.