He seemed more powerful than Captain America to me at first sight, but i guess when you get into the practical matters, he isn't all that overpowered, as a good hit to the head can still kill him. The bigger problem is his incompatibility with the premise of the RP, don't you think?

About the meat of the RP, i've got the first part planned out already, so we can start as soon as we have 4 people with accepted characters.

Edit: Also, as a comic book character, Captain 'Murica's abilities tend to fluctuate. Some of the comics have him bench pressing 2000 lbs, which is supernatural in every way but in name. When i say peak human abilities, i mean more like the realistic peak, rather than the way comic books sometimes portray it.