I've done everything myself, except the brake fluid so far. You should only have to do the spark plugs at 60k miles. That's the only thing i'm going to have the dealer do when i get to that point. I just took care of 1 item every when when i got close to 30k and i'm almost done with everything now (except the brake fluid).
The coolant probably took the longest (about 2 hours since i'd never done it before.) Brake fluid shouldn't take too long either, but i'm going to be installing some SS brake lines at the same time.