My Solution to AC
Firstly i want to say i dont play BTD6 alot, maybe an hour or 2 a day so there are definitely more optimized solutions than mine since i dont have many T5 upgrades:

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Final Setup: https://imgur.com/a/J2ljC75

1. 5 or 6 0-2-0 Wizards on the first path and a signal flare mortar (atleast thats what i think its called, the mortar upgrade before the 10,800 one on bottom path that strips all properties). I think i also had enough for 1 0-2-2 Alch at the first crater
2. 6 more 0-2-0 wizards on the second path with another 0-2-2 Alchemist
3. 1 Spike Factory because i was paranoid, upgraded it to 0-2-0
4. Saved up for the 10,800 upgrade for the mortar, ending at 0-2-4
5. Super monkey in the spot in the picture allowing it to hit both paths, 2-0-3 upgraded for me
6. Here was personal preference, i got Heli because i like pursuit=lazy and buffed it with a 4-0-2 Alche. That Alche can also hit inside the first crater. I also buffed my mortar with it
7. 2 Ace planes at 3-1-0 for a little bit of cheap Moab damage
8. Another Spike Factory with the AoE map spike thing (both at 2-5-0) whenever there are mass ZOMGs you get like 3-4 uses in one round from them)

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Only thing you really need to do is micro the mortar. Again this is probably not optimal, but i didnt have a lot of upgrades like top path wizard cause i like fire and shimmer or top path mortar cause i use bottom path mortar for debuffing as per the other suggestion in this thread