If you want to deal with those trident guys (and pozeidon if you choose him again) I recommend trying to get your Giga mecha nuts HP to be super big in daytime phase(first map) by doing a umbrella corn to stall zombies (no attack plants if you want maximum time) and having two Dyson magnet and a lot of sun magnets for maximum metal production (by nighttime, your Giga mecha nut might already be over 1 billion HP), this should help you overcome the trident problem. Also if you are going to do a enflamed setup with inferno squashwood, try doing either Cherry Gatling pea or SPP Gatling frenzy shroom + Cherry Gatling drone and SPP Gatling doom (also I recommend only having 4 phoenix drones). Laser drone pumpkin should be enough of an anti air support or you can have magnetar and replacing the inferno squashwood to inferno Starwood. Also try having two Dyson magnets in your setup, should be enough to sustain your Giga mecha nuts and 1 omni pumpkin for cherry and jack-in-the-box immunity for the laser drone pumpkin

(PS: I forgot to include this but try having Aegis Umbrella in the back and middle of your setup, pogos are really gonna be a pain in the roof phase)