Unless you're in urgent need for cash and/or living space, I'd say just take your time in selling the TFs you don't want. As you said, you don't want to overwhelm yourself as a seller... sort out what you don't want -- go for the stuff you definitely know you won't miss first; leave the stuff that you're undecided about for later.

Also, well said about the passion. Money can buy toys, books, comics, DVDs etc., but it can't buy passion.