I would suggest only taking him out of the cage with sleeping or bonding pouch, that way he doesn't run away. Mary in unbonded, so I put the bonding pouch inside out on my hand, grab her, then pull it inside in, with her now in the pouch. then I can sit and try to bond with her or give her some treats.
With Connor our single glider, I just pull his sleeping pouch out with him in it, sit with him, talk to him, and give him some treats. He's crabbing less, but still very jumpy, nervous.
A full sized freezer cost me $58 dollars a YEAR to run. One LED light bulb should cost 5 buck for the YEAR. Leave the light on during day, they will sleep.
When we first got gliders, I put cage in the bedroom when I worked nights, and slept days, keep gliders safe from dogs. But I sleep in quiet and darkness. the darkness caused them to wake up and run around cage at 12 noon, waking me up. So until I trusted the dogs with cage in living room, I slept with the light on for awhile.
set up a small area, glider safe, sit with him and let him run around. At first less interaction with him in playroom the better, give him a chance to get used to you.