If he's not very good, just bet. The pot's $60 (?) now, so shoving $70 is ok. I think checking this turn is bad. You are ahead here, so put money in. As North said, a slightly bigger flop CR (even $30 not $26) makes AI on the turn even easier. Ks and FDs are calling.
Imagine he checks behind, river is a
, you check, he shoves. Now what? You could be making a big mistake here either way. Don't try to be clever against bad players, bet your good hands.