To be brutally honest I wouldn't touch any of the names you listed with a barge poll, even at reg-fee. If you got them at auction, and there was no competition – there's a good reason for that. There are literally tons of well-funded pros on the auctions and for that reason there are very few true bargains to be had.
You would be much better off buying off the forums or direct from domain registrants (IMO)
Learn the game the before playing it – you'll thank me later (maybe
)
Good starting points would be
Namenewbie.com
Dnjournal.com
DNF (You made it here so that's a promising start)
Welcome to to the forum and good luck.
- Rob