Been running two for the last two days and have several more ahead of me. It’s rough for sure, really wonder if the firminators are worth the money, hauling two tractors fuel etc to plant 3400 acres sucks.
You still need a spreader for fertilizer. You could use a SXS with something like the Hooeyman spreader. Spread fertilizer first then run the Firminator over it. In my light textured soils I can plant one pass if the plots have been sprayed 3-4 weeks prior.