Is the carpet being glued down, ie concrete floor underneath? If so, it's not a huge chore to install, but messy as crap. When I finished the basement of this house 2 years ago, father in law came over and showed me how. The chore wasn't difficult, but betting the glue off of the hands after was a pain in the butt.
If it's going to be over a wooden subfloor, and you're using tack strips, I'd recommend finding someone to do it. I bought my own kick stretcher thing, but it turned out to be a lot tougher to use it then installers make it look, and if you can find a good installer who knows what he's doing, he'll do a way better job of stretching it then a novice.
I say this as someone who hates paying people to do anything...I do nearly all of my own house maintenance, and if I can't do it, I make sure I learn how for next time. (I actually just bought my first rental house last year, as I really enjoy doing maintenance), but carpet install is one area I've realized it's worth paying someone.
I think I paid my guys 300 a room maybe?