Too aggressive, too early?

[AndysDaddy]

Last night I placed in the money at a one table SNG at PS for the first time after about five tries. OK, no big deal, but still somewhat satisfying. A couple hands after the 4th place busted out in my euphoric state I played this hand. Too aggressivly, I think now:

Blinds are 75/150. I have ~T1400, SB has T9600, BB: T2450. I get A[img]/images/graemlins/heart.gif[/img]8[img]/images/graemlins/diamond.gif[/img] UTG and raise to 600. Only SB calls. Flop comes J[img]/images/graemlins/heart.gif[/img]5[img]/images/graemlins/spade.gif[/img]10[img]/images/graemlins/diamond.gif[/img]. I bet all in thinking the BB has either a small pair or moderate overs. With a small pair he should fold, with KQ or some such I'm the favorite. With most anything else I'd have expected a reraise BTF. He calls and shows AK and I get 3rd place money.

I think I still like my BTF raise, but not the all-in. I'm not sure what I would have done had I checked and he bet large. I'm still new to this game and I sometimes have a difficult time evaluating a situation afterwards without focusing on the results. Any comments/suggestions/harrasments are welcome.