Calling all-in with strong draws?

[JKDStudent]

I'm basically looking to see if my thought-process on this is in the right direction. Here's the hand as best I remember it.

I'm BB with J9 [img]/images/graemlins/spade.gif[/img] A couple of limpers, I check.

Flop comes 8 [img]/images/graemlins/spade.gif[/img] 10 [img]/images/graemlins/spade.gif[/img] blank (I don't remember, completely insignificant)

I bet, player to my left goes all in, folded back to me. At this point, I have the player to my left covered, though not by a lot. Let's say as a rough estimate, I have 20% more chips than him.

I call. At this point, I'm thinking that regardless of what he has, aside from a better flush draw, I have some VERY strong draws. Open-ended straight flush draw. That alone gives me... 15 outs? 9 spades, and 6 non-spade cards that will make my straight.

Because it's relevant to my thought process, the other guy showed pocket aces, making all of my outs good. The turn came another jack, giving me another five outs (the two jacks and the three nines which would give me a set or two-pair, respectively)

I don't regret the call at all, as I was on a VERY strong draw. Even when he showed pocket aces, I felt I made the right call. So... validation? Is my thought-process here correct, or do I need to re-evaluate?

Extra information: We were still in the rebuy portion (and there had already been a couple). Only a six or seven-man game with top three getting something.