Weeelllll… that's kind of up to you. Assuming that you have the polarity correct on the electrolytic caps and the diode, the problem parts will be the USB socket and the IC socket. Also, with parts on both sides, the board may not fit so nicely into a tin - offhand, I don't know for sure.
Unsoldering is more difficult than soldering, so if you're new to it all, it may not go so well. On the other hand, if you think of it as a learning opportunity, and if you're already planning to buy another kit, then you've got nothing to lose.
You'll need a solder-sucker and/or solder-wick. I prefer solder-suckers myself, but other people go straight for the wick.
we stock is very nice. We also stock solder wick