J9s combo draw oop - 50nl

opener is solid 13-12-6 with 70% cbet flop and turn
button caller is dead money 48-16 who doesn't like folding much, and seems neutral between the call and the bet/raise buttons.

Pre-flop i call a decent implied hand with relative position and with a fish in the pot. Flop is great, check-raise or donk? turn plan? sizing?

PokerStars No-Limit Hold'em, $0.50 BB (8 handed) - PokerStars Converter Tool from FlopTurnRiver.com

MP1 ($63.35)
MP2 ($52.80)
CO ($34.25)
Button ($43.45)
SB ($54.75)
Hero (BB) ($50)
UTG ($53.75)
UTG+1 ($50)

Preflop: Hero is BB with Jhttp://www.flopturnriver.com/pokerfo...lies/spade.gif, 9http://www.flopturnriver.com/pokerfo...lies/spade.gif
UTG bets $2, 4 folds, Button calls $2, 1 fold, Hero calls $1.50

Flop: ($6.25) Khttp://www.flopturnriver.com/pokerfo...lies/spade.gif, 8http://www.flopturnriver.com/pokerfo...lies/spade.gif, Qhttp://www.flopturnriver.com/pokerfo...es/diamond.gif (3 players)
hero needs a plan

With 70% cbet and a fish I c/r this board as there are a lot of turns that are good for your hand and for barrelling.if you get flatted after c/r I just jam turn, even if its a brick, you have 24% equity vs. A made hand plus your fold equity gives you a good spot to get it in.