My lights come on a 7.30 am, then the mister kicks in at 7.35.
If I didnt have the glass viv, and my two girls in cages, id have the mister on for a couple of minutes each time, but thats why I have the dripper. If you have good drainage then I wouldnt worry about having longer mistings, keep it at what is working for you if he is drinking. Mine is a fussy bugger and even with the 3 mists a day and the dripper his urates still come out orange. but he is getting better. he has recentkly been with a female so they can go a bit funny with food/water.
As for feeding, mine became very sexually mature at around 4.5 months so started to only eat as when it suited him which can sometimes be a bit worrying, but its just nature, I gave him a full selection and he just ate when he wanted. he has still grown over the past 1.5 months since he started being picky, so im not worried any more.
He has started eating every other day and will eat 3-4 crickets at a time. large crickets might I add.
My female was digging a tunnel as I left this morning so hoping she will be a bit thinner when i get in and will have deposited a couple of eggs. : )