I've been looking into self funding in the US. The thing i'd say about com air is that it isn't an integrated course. From what i've heard several airlines have said they will only take integrated low hours pilots.
Have a look at
http://www.wmich.edu/aviation/index.htm it's pretty interesting and from what the CAA say its the only US located JAA approved institute on the integrated route.
I think i'm pretty much in the same boat as you, and hundreds of others with a pretty big gamble to take if we want to fufil our dreams! I've passed the oxford selection tests but just not sure if i can afford to take out a loan to cover my training. The US training works out about £10 000 cheaper overall so its got the advantage!!
Cheers & good luck!!
Chris