$1 SNG bluffing question

[skierdude1000]

Ok, 7 players left $1 SNG... top 3 place... start with 2k chips

I have 2000 chips in the SB blinds are 100-200.

All the other stacks are pretty healthy...

Folded around to me in SB I have 55
I min raise player to my left to 400 (he has 3100 chips)

Flop is J62 rainbow

I bet 400 into the 800 pot...

He raises allin... I think about it and fold.

How was my play?

Do you guys also like to bet out after a raise preflop?

I didn't want to raise more preflop because 3x would've been 600 and then I'd be kind of crippled I thought.

Comments please and any advice on how to play when you are short like this and trying to take pots