I fly the RJ-700 all the time, it's my favorite jet. Fast, comfortable, and it flies non-stop from LA to Eugene. I'm 6'2, 265lbs.
Don't carry on anything bigger then a briefcase, use the 'ala carte' option at the gate if it's available. When I fly Horizon, it is.
The plane, it's a kick to fly in. Cruises at 40,000 and takes off like a sportscar. Last flight into Eugene, OR, the pilot had to be a military aviator the way he dove us out of the sky. Good stuff.