2-5 NLH -- live game at the MGM

[Rococo]

SB -- $800
MP -- $779
Hero -- $510

SB is a solid, conservative regular.
MP is VERY loose passive preflop (probably plays 80% of the hands) and something of a calling station postflop. He will put in a raise if he feels that he is ahead, but I would not describe him as aggressive.

4 limpers (including MP) to me. I limp on the button with 8 [img]/images/graemlins/heart.gif[/img] T [img]/images/graemlins/heart.gif[/img]. SB completes and BB checks. Flop comes 888. SB opens for $20. MP Villain is the only caller. What is my plan from here?