M.,
Hard to tell from your pic. If the urate is yellowing, then yes, he may not be getting the maximum water intake. I would concur with Earl that hornworms would boost his hydration. I get a cup a month and feed them as treats. Lucky goes NUTS for them, but can cause diarrhea if fed too many.
You're headed in the right direction. Put your roaches on craigslist to sell the ones you don't need. What I should have done when selling mine off, was to separate the colony into two. What I needed vs. what I wanted to sell off. Keep your remaining colony @ 70* +/- to slow the breeding...
I concur with the above. Bright colors are stress colors, Brown, olive drab green and variants of the shades are what Lucky stays most of the time unless I stress him out. Look for dull colors on a veiled to recognize calmness and a relaxed cham. My misting schedule consists of 5 min. sessions...
Lefty. Dabbled at music early in life. Now, not much enthusiasm to explore much more than the couch. I have previously excelled in free diving (abalone and fish) and scale modeling ( WWII, sport and 3D RC flying).
The rule of the thumb is the size of the feeder (hard exo-skeleton) dubia should not be any longer than the space between your chams eyes. Soft feeders can be a bit bigger. When in doubt, go a little smaller. You don't want your guy to possibly choke.