O/8 hand UTG -- playable?

[PseudoPserious]

Hi all,

I'm fairly new to Omaha/8. This past Sunday I played some 4/8 with a half-kill. I played for 2.5 hours and only saw 4 flops outside of my blinds, and only went to the river with one of them. I'm concerned that I was playing a little too tight.

Here's the hand that (in my opinion) was the strongest of the hands that I folded:

The game is nine-handed. It is not a kill pot. About 1/3 of the hands are raised pre-flop. It's usually 6-8 seeing the flop whether it's raised or not. Some surprising hands are shown down at the end.

I'm UTG with Ah 3h 5s 7c. I fold.

Is this hand (in general) playable?

I had a tell on the guy next to me that he was going to raise (which he did). If I know that the hand is going to be raised, is the hand still playable?

I would have been happy to play this hand in mid/late position in an unraised pot. Is it strong enough to play earlier or after a raise?

It was a frustrating 2.5 hours, but this was the only hand that I double-guessed myself on. I'm going to review my O/8 books to make sure I'm not screwed in a little too tight.

Thanks,
PP

P.S. For what it's worth, I wouldn't have flopped anything...not that it matters. But this isn't a "oh my god, I would have scooped a $300 pot" post.