Yeah, research is the key. Wasn't implying you hadn't. Like I said, "if you're like me". I thought I had done my research, but I missed the issue that they are most likely to need worming and such soon after you get them, just like a puppy. I certainly wasn't expecting "dog-like" vet bills with a lizard!
Regarding the tube light, maybe someone else can give a more definitive statement. I went with the MegaRay after seeing all the positive comments here, but also because I wanted something that provided heat and UVB together. Also, with a glass aquarium, it was much easier to arrange for the bearded to be 12-16 inches away from a MVB than it was to arrange it for them to be 6 inches from a tube. I also didn't want the hassle of dealing with a tube light in the way whenever I wanted to get into the tank. The MVB in a dome fixture is much more convenient. If you do go with a MegaRay, just be sure to realize that you need a good probe thermometer to check the temps at the basking spot and you need to keep a check on them every couple of days for the first 2-3 weeks as the bulbs have some burn in time and the temps will change some in the first few days. Also, your bearded should get calcium that does not have D3 in it as the MVB result in much more efficient D3 production in the lizard naturally and they could get too much if given it in their diet also.
The baths are a great idea. From my experience, as I said, there is a good chance your bearded is just needing some settling in time. They do seem to stress out when relocated and it definitely affects their eating. We tried everything, Phoenix worms, etc., but it just took time for her to adjust. Then she took off. Incidentally, ours didn't care for the Phoenix worms at all, though some swear by them. I'm guessing you already found in your research to never feed mealworms and that Phoenix worms are the only worms you can really use until your bearded is full grown and then they could occasionally have super or wax worms, but never mealworms. In our case, we've found the crickets to her favorite and she does great with her greens, so we're not looking to experiment or change anything for now.
Again, best of luck!