I'm afraid I'd concur with thndrdancr here, at 4 weeks integration may not be possible. Any chance you could borrow a chicken chick from someone for a while, to keep him company and give you a break? My Chirpie is imprinted, but he had other chicks with him within a week of hatch, so he has always been used to being with both humans and other Peas.
I have chicks but have them outside already. Some banty and LF. The peas aren't due to hatch til the 4th ish