I really question if
are going to use dims against us; they're dealing against time and light this round, elements far more deserving of dimspam than us. I would predict them trying to counteract a poison-based strategy. Monowater NT with a deflag splash, or something faster than that, would be my choice.
AM Flooding should work well against
... I don't know, though. To be honest, the only thing that light could send against us that flooding would be of any merit would be RoL/Hope unless they want to try some crazy rustler antics. I just can't see them sending either against us. Why not just a 45 card AM stall for light? I seriously question flooding's merit.
... Hm. Swallow is a solid choice, but I'm worried it could be too slow. If they're playing a stall, though... With SoPa on our side, I'd expect it to be an aggressive stall (Entropy/Life or Fire/Life) if they are going to try and stall us out. I can't think of a better idea, either, though.
Air and Gravy's the issue though... I don't have opinions on them. I would probably field NTLA* against gravity with... pdials or silence/lightning against air.
* Do you want to do the ultimate curveball? Use NTLA, Which is quite literally 9 entropy pends, 9 darkness pends, 6 water pillars/pends and 6 NT. It works as both quanta denial, creature control and both a stall and stallbreaker. But a single CC and it's dead faster than you can say chipotle. Obviously, you need the tinkerer to do this, and it's probably needing more mods than you can throw the sun at, but god damn it this deck should be used once.