How many chicks are you going to have?
Crazy idea but how about a small tent? (kiddos could play in it afterwards) you could put a tote inside tent ⛺? Could still use heat until fully feathered out. Then out in tractor. Where do the hens lay eggs? And where do the they roost at night.
Are they going into coop? Is it built?
I brooded in coop before and it worked fine. I also have brooded in a tote but it was in our she shed.
If there is a warm place like a MAMMA plate heater I think the would search it out. But they must be protected by wind or water.