This setup has 17 ice melons which is almost as much as ice rain 12 cob. It uses the melons to accelerate the tempo like gatling peas might.

Threats:
Zomboni- Definitely the largest threat. This setup depends on winter melons to help kill the zombonies so it's very possible for zombies to block the winter melons. It can squash the melons at 1-6 and 6-6
Jacks- Jack suppression on this setup is surprisingly good. If the waves spawn in too fast, icing isn't necessary because this has good auto jack suppression. I played several rounds on this setup and jacks never blew up.
Giga- Requires multiple cannon fodders to not squash the plants at 1-6, 2-7, 5-7 and 6-6
Footballs- Very unlikely for them to reach the plants because of the amount of melons but it's a good idea to stall them anyways
Diggers/Dolphin Zombies- Creates a lot of pumpkin pressure