$3 Pokerstars MTT before the first break

I'm in SB with TT and an M>20

3rd calls

5th with M<10 and a 5th of my stack goes all in

I go all in to isolate him

3rd position has around 90% of my chip stack and calls with AK unsuited and hits his king on the turn. I had previously noticed him as a pretty loose player, calling 10xBB preflop bets.

5th is out with pocket 3s

Question: Should I have just called the all in bet and then gone all-in on the flop when the board showed no overcards?

What about if I hadn't really taken any notice of his previous play and I didn't know that he was a loose player. Would that change anything?