Why brooder?

Hi everyone. long time no see
Over the last 18 months or so I have sucessfully reared about 15 chicks all with the help of a broodie hens.
Now I've used my electrical/electronics abilities to builld an incubator.
Hoping for some results within the next few days. Now I ned to know about brooders
My incubator is about 3ft by 2ft. What is to stop me using the incubator as the brooder?
The incubator uses a pretty nifty temperature controller that is easy to set when required and has timed lighting included. Your advice would be appreciated.
BTW I have two half allotments for my birds. One has 6 Light Sussex Bantams(and cock) and the other a mixture of 4 rescue hens and cock.
I find the keeping of chickens to be a pleasant diversion from the Veg allotment itself.
Thanks a lot,
Alec