In season 1 I'd omit NB and Witness and replace them with I've Got A Crush On You, The Rival, and/or Fly Hard.
Season 2, I'd definitely include The Prankster, Maybe leave out IR, although the ending is so worth it... Heck, I say if you're just going to watch half the episodes of the series, go heavy on season 2 and go lite on season 4. But that's just me!
But yeah, speaking of season 4, skip off on TPVLL... that one's just painful. AKA Superman is a pretty good one to replace it with!