I don't want to burst your bubble, but you're gonna need a lot of cash to compete against the big boys. GameSpy, GameSpot, IGN, etc. The small sites just aren't worth the effort.
Consider this. If the source of your future content is from any of these other sites, then don't even bother with it. A lot of small sites out there just steal the content from the big boys and throw up a bunch of affiliate ads hoping someone will pre-order a couple games from them.
If you really want to build a game site, concentrate on a single game that is popular, or will be popular for a long time. Build a forum to get repeat visitors, and go from there.