Man, how can you have TZ and TAF and them not be sitting side by side 
Ive owned a bunch of games too and haven't sold many. Among the few I sold, Funhouse and TSPP and don't miss either. I have a floater stern that I use to trade for new releases or interesting sterns i haven't owned. GOTG became TWD which became AIQ etc...I would highly suggest you try this approach.
As far as your collection, you gotta keep what speaks to you.
If your's was mine Funhouse would be the first to go, followed by TSPP and NGG. TZ is a forever keeper.
Goodluck!
West Des Moines, IA
