Chippy McChiperson
Straight Flush
To me, With the qualification I have never played this game, I would approach my starting range similar to seven card stud. In a vacuum not a horrible starting hand, but with a nine exposed and utg+1 raising in early position, he probably either has a wired big pair or three to a straight/flush. You most likely aren’t going to hit the case 9, so your hand is not good enough to continue with.