That is a great list of games you have incoming, I'd say almost all those titles are classics.
As for selling your old games it sounds like you made out well at least, nothing to regret there. For a lot of us here we can recall putting our games on garage sales for just a few bucks a piece. All my original NES/SNES/Genesis games were put on garage sale for about $5 each complete in box so I could buy newer systems/games. :P