Fold and that's pretty weak holding's going pre-flop when you expect a lot of multi-way action.

Given your read and his ability not to value bet thin, I would agree with iggy that it's either the low straight or nothing. That would make sense a given he still has to worry about the guy in the bb.

shipping river to fold out k5 is bad (hint: k5 is very rare). just call and feel good about it.

If I check the river its usually with the intention of calling barring some read I pick up from villain that tells me otherwise. Hes tilting, and he thinks your a nit give more weight to calling.