decent turn raise

My first short-handed post. Hello all.
Hero is BB with 76o, SB and Mp are both fairly tight aggressives.

Mp calls, sb calls and BB checks.

Flop: K,8, 7 rainbow. checked around

turn: 5. SB bets, hero raises...

I'm pretty new to shorthanded, should I have bet the flop here? Is the turn raise ok?