I'm thinking Black because all the Black pieces are active.
White is going to have it play it pretty cagey and watch out for
a multiple piece sac near his King.
[FEN "rnbqkbnr/8/8/8/8/8/PPPPPPPP/RNB1KBNR w KQkq - 0 1"] 1. e3 {To cover any quick Bc5 sacs on f2.} 1... Nc6 {Going for the soft spot on c2.} 2. Nf3 Bf5 3. d3 Nb4 4. Kd1 Bxd3 5. cxd3 Nxd3 {Whita cannot the discovered check.} 6. Bxd3 Qxd3+ 7. Nbd2 Bb4 8. Re1 Nf6 9. Re2 Ne4 10. Ne1 Qd5 {Black is looking good...very good. Of course White must better but it's just an inkling of what's in there and how quick Black's attack is.}
Actually, i put the position into an engine and black was up to +5 within a couple of moves. Interestingly the game started 1.Nf3 ..Na6! Which is an incredible first move by black! It follows the same strategy as GP, aiming for c2 but via a6 instead which is logical but highly unusual. 😀
It looks like GP has the right of it. You don't realize how much the pawns block the pieces in the initial setup until you try playing a few games with this start position.
I'd think that white would want to do two things: develop pieces and trade pieces. In any case, I think since you like the Black pieces GP, we should have a forum vs GP game with this set up. GP gets the black pieces. The forum is pretty slow and it looks fun.