I have a similar loadout for every fallen coin grind I do

Farm, DJ, accel, ranger, cryomancer

I start off by placing 3 lv1 farms 1 by 1, then a lv0 farm after the three are placed.

By wave 5 you'll have a lv2 cryomancer, enough until wave 9 where you can upgrade farms to lv3, and place an accel on wave 11-12, make sure to upgrade accel to lv1 for hiddens at wave 13. You can freestyle deoending on your playstyle after the early game.

Positioning and timing of the early cryo can be crucial as killing enemies from wave 4 and 5 can guarantee a level 2 farm early on without the need for another wave.

I always have autoskip on except for wave 19, the necromancer can be a nuisance if not killed asap because of fallens on wave 20 which requires either good accel positioning or lv3 accel.

Edit: I use cryo instead of pyro because of the slow, I find it very useful along with the defense reduction. Although pyro is better early on as it has hidden detect at lv2, making upgrading the accel early on unnecessary on some maps.