He is a baby and he may never adjust give him time wait a little longer try not to handle him and when you do be really carefull of those sudden sprints
leave it in his cage it might scare him as its new and odd but they will warm up to it chameleons can be shy and its sometimes nearly impossible to see them drinking or eating the only way to tell if their eating and hydrated is their scat and urates. So just give him some privacy he might not...
As stables i use dubia roaches and Crickets... for treats i use hornworms and silk worms... i don't see why your chameleons behavior would change unless your giving him feeders such as wax worms or too many meal worms, also avoid feeding "pinkies" or feeder mouses as they are very fatty and...
ive heard grape leafs and mulberry chow... which is recommended other then that i havnt heard much success other then that ive never had any cacoons but it would be ok if you sent me your extras :)
I have gotten my cham High before with a friend and it defiantly doesnt make them hungry... it made him very active and a little disoriented along with that i read that it can kill them as their lungs are a lot smaller then ours and smoke is fatal... almost like how birds are more susceptible to...
their called vivariums, yes their fine and look great i was going to do it but i find it a pain to get the drainage right. your gona need a layer of hydroton at the bottom along with a net to keep the substrate from falling through or getting soaked. Post Pictures when your done
if you mean hanging upside down on the top? then no its ok, its a baby thing and they do it constantly, my adult panther still trys it somtimes. make sure the heat wont burn him as this wont be the first time