A quick google search indicated that the power rack you're looking at goes for about $390. Is this right? You could save yourself some cash/accelerate your home gym progress by doing some relatively easy home projects:
1. The pull-up bar in this video (http://www.crossfit.com/cf-video/georgepupr.mpg
) was made for less than $60 IIRC. Materials included 1.5" pipe, a 2x4 and some wood screws.
2. Homemade rings (http://www.crossfit.com/discus/messages/26/10182.html
) go for around $20 IIRC.
So far this gives you the pull-up and dip options without taking up hardly any space. Take the $310 you saved from not buying the power rack and get 2 4'x6' 3/4" stall mats (about $40 each) at the nearest Farm & Fleet or equivalent. The remaining $230 can be used to start building your bumper plate collection (looks like you can get a pair of 10s, 25s, and 35s for about $296 from Gill, BEFORE the CrossFit discount and shipping).
IMO, the power rack simply isn't worth it - takes up too much floor space, it will rock during kipping pull-ups (unless weighted down) and IS NOT a cool place to be O-lifting in.
The squat stands are OK, but aren't a high priority item compared to the other stuff. They can be homemade (http://www.crossfit.com/discus/messa...html#POST63862
), but if you want to save up for the real ones, you can always practice your deadlifts, Steinborn squats, squat cleans, etc. until you get them.
Almost forgot - Welcome to CrossFit.
Hope this helps,