First of all, 69/12 is not exactly a maniac, it's your typical loose/passive fish (well, at least PF, with an AF of 12 he's a real maniac post).
Second of all, 100BB stacks is not deep, it's average.
With that out of the way, let's get to your question. You have terrible immediate pot odds
to call - you only have around 15% chance of hitting your straight, or around 1:6. You should play this like you would play any pocket pair or small suited ace - hit hard or get out.
As you describe it, though, you have good implied odds, given that you'll be able to stack him if you hit your straight.
You should average around +$1 with that move. If he was really deep stacked (200BB+), your EV would have been way higher. But since you're both sitting only with 100BB, your gain isn't that big.
Also, how likely is he not to realize he's beat with such an obvious straight on the board?