repost: PL Omaha hand #2

[Guy McSucker]

This is a repost of a question I asked below but got no replies. Again, apologies for boring you!

$1 big blind PLO game on Paradise. Most stacks in the $75-150 range.

I have J467 in the big blind and see a free flop, five-handed or so, of J45, two diamonds.

With two pair and a straight draw, I bet the pot and get one caller. I have no diamonds.

Was that a mistake?

Fourth card is an offsuit 8, making me the nut straight. I bet the pot, and he calls again.

Last card comes a non-pairing diamond. There is enough money left for a single pot-size bet.

What should I do? What about if the river had been a pairing non-diamond card? Or a diamond which paired the board?

Many thanks for any replies!

Guy.