[Brian]

Raise the Turn in general in these situations, but especially here as you have 8-10 outs vs. an Ace. Turn bets like these into the pre-Flop raiser are often bluffs or semi-bluffs. Of course, it's sometimes the Ace as well. But the pot is relatively large, and you've got a vulnerable hand to protect as SB is still in the pot.

Check down the River if you raise the Turn.

-Brian