I use egg beaters for cross racing, trail riding and commuting. Great pedal, I love how easy they are to engage and disengage.
This years Rx1.0 is pretty solid out of the box and for the price is fantastic. For an entry level cross racer the bike is perfect. Even if you were to get more serious about racing the only thing you'd really want to upgrade are the wheels and things like bars, stems, saddle et cetera for lighter weight and better fit.
I have a 2007 Rx 1.0 frame that has parts off of a Kona Jake (weird craigslist deal), but the frame fits so well that I'm throwing a lot of money into it for racing this season. It's also a great frame to have down the line because if you upgrade to a more race specific frame, you'll be left with a great commuting light touring option. It's great to have a bike that will fit full fenders.