Nowadays like 60% of decks are from the same woodshop (BBS) and the quality is quite good. I think a lot of the nuances are more so consistent to nitpicky older skaters i.e 1/16" of a wheelbase(I know one REAL well)....I'd try an 8 or an 8.25, DLX board (AH, Real, Krooked), Indys/ventures/thunders, with some F4's or Bones X's and you're good to go. I agree that it's nice being able to skate a park which has so much more to skate.
About being over 30...honestly I think if you took the best skaters in every city, the average is closer to 30, than 20 that's for sure.....at least around here...