Calling is 1/5 your stack.

I see 3 possible lines:

1) Push now (the hyper aggro, rabid SNGer approach).

2) Fold now (the conservative, I want to make it to the money approach).

3) Call now, Push to a continuation bet on a low flop (fold to any Ace, any two overcards, or a larger than pot sized bet on flop).

I think #3 is the best line when I rationally think things through, but I'd probably go for either #2 or #1 in the heat of battle depending on how spastic I was feeling.