Ferrets are totally social animals and need a companion. Make sure you do all your reading and make sure you're ready for ferrets. They are expensive and generate hefty vet bills. Call up the exotics vet you plan to use and go over what they charge for basic necessities such as repairing a broken leg or tooth, intestinal obstruction removal, adrenal theapy and gland removal....oh and exam and shots too.

Ferrets are trouble on wheels and are frequently in need of midnight trips to the emergency vet- find one ahead of time that will see your ferrets. Look up your vendors for quality food options, and go for grain free food if possible. My ferret (she's forced to be single because of sudden blindness- other ferrets freak her out) eats Evo. Basic requirement is 30% protein or more, 20% fat or more. Not all commercially available food is particularly good. Raw feeding is very good for them if done right. Ferret proofing is very important, as I see you know. If your room is their exercise area, please plan ahead for their out time, as they'll need 6-8 hours every day if you get babies. Be ready to be woken up every 2 hours by squealing weasel battles, knocked over trash cans, and visitors exploring the bedsheets. It is adorable for the first night, and then it gets really old when you can't get a good nights sleep. This is why I foster oldsters- they don't need so much exercise. I hope you are ready to have your floor surface used as both toilet and toilet paper (they wipe afterwards), and wear thick socks or shoes 24-7 in the likely case you get toe-biters.
For finding your fuzzy pal(s), please consider rescue. I volunteer (and foster!) with wonderful ferret shelter in MD called Rocky's and we frequently get babies in that people surrendered after only having them a few months. We also have adults who are calmer, cuddlier, and NOT BITEY!! If you do get babies, please be prepared to be bitten and train them out of it. Almost all babies bite even if the guy at the store tells you they don't.
Some good links:
http://www.rockysferrets.com/ferret_tips/index.htmlwww.ferretvillage.orgwww.miamiferret.org/fhc/Naturalferrets Yahoo group
Good luck!