looks like you might need a re-think of your budget7D - 2.3k includes lens??
how about d90??
Don't have to get the most expensive camera within your budget... the accessories can cost a lot too.
Just to let you know: My D80 kit cost me about 1.6K some years back, but I've easily spent MORE than that just on the other stuff (tripod, dry cabinet, lenses, flashes, filters, etc). And my stuff is nowhere near 'pro-grade'... so you can imagine how costly this hobby is...