OK play or foolish lucky overplay?

[sandsmarc]

I am new to no-limit being 47 years old and raised on limit games. I'm wondering if I won the following hand because I made the right play or just made a dumb but lucky overplay.

This occurred in a semi-loosish game with lots of limping pre-flop but lots of folding on the flop. I'm in early position with T8s and limp along folowed by 6 or 7 others.

The flops comes all spades with an ace. Great, I flopped a flush and the ace is out to give me some action. I bet $15.

Tightish opponent #1 is holding the nut flush and just calls. LAG Opponent #2 has a bad ace and just calls.

The turn brings a red ace, pairing the board. At this point, I still feel I have the best hand so I go ahead and bet $50. Opponent #2 just calls with the nut flush. Opponent 3 now has 3 aces and makes it $100, and I decide I'm still probably good and make it $200.

Opponent #2 thinks for awhile and folds and trip aces re-raises all in (another $100 or so). I call instantly, the river is a blank, and I win.

When the nut flush guy saw the hands he was vexed to say the least. He seemed to think I was crazy for thinking I had the best hand. My attitude is the odds of 2 players flopping a flush are low enough that I'm not going to worry about it.

I just think the nut flush guy made a bad fold and a bad slow play.