Not with a GTX550Ti. I'd recommend looking at a GTX560Ti instead. It'll provide a bit more power to last longer.
Anyhow, you mentioned a few PSU's, and they are all overpowered. They also aren't of brands I've really heard of (except Huntkey, although AFAIK they aren't the best of PSU's on the market).
What other choices do you have in the PSU market? You should be looking at a good-decent 500W PSU to power what you have listed above.