Thanks guys, you have confirmed my view that this wasn't easy!

I was scared of all the draws and still thought he was weak so overbet the pot with t1200 trying to win it right there. He reraised all-in and I was pot committed. He had TJ and won with the straight.

I'm still not sure what I'd do next time. Perhaps it is worth gambling at this stage of an MTT though with so many fish still in.