Not much to add that hasn't already been said, but here are my two coppers.
I finished the last half of 59 in two hours and 29 minutes. I know this because my beautiful lady friend was playing her fire mage, and we were comparing experience gains while soloing. She timed me while I soloed the lumberjack camp in WP. I didn't die once and gained about 50 gold thanks to a few green drops and one blue.
It's difficult to Frost Kite without taking any damage; the mobs have to be very close before the pull, you have to have a low ping so you can time your spells correctly (Frost Nova in particular) and you can't have any resists. Don't grade your performance on what others say they can do. You're the one with the character. Enjoy it your way, and let the braggarts brag.
Also, a little trick I use; after casting Ice Barrier, wait about 15 seconds before making the pull. Since it lasts 1 minute but has a 30 second recast timer, you can cast it shortly after it fails. This also gives your mana time to fill before you make the pull, which can be important on those "Oh crud I just got an add with 10 percent mana" pulls. It takes a little patience, but can make a bit of a difference.
Happy nuking!