Not sure the tent is "the best brooder in the entire world".
Most the dust from chicks is the feathering sheathing from new feather growing in.
Hopefully your coop is big enough(8' x 8'?) for people to hang out in there too.
Most the dust from chicks is the feathering sheathing from new feather growing in.
I'd move them to the coop with the heater plate after a week or so.. After 10 days, I planned to remove the cardboard box and allow the chicks to be in the 8x8 tent with the brooder plate
Hopefully your coop is big enough(8' x 8'?) for people to hang out in there too.