Yeah I would get rid of the red light. You may want the lamp dimmer, they are very cheap, can find them at the hardware store or online or you can get a lamp stand made for tanks that will allow you to adjust how close the bulb is. The dimmer seems easier and better to deal with though. Then place the uvb towards the basking side as close you can to the heat. This way they can get uv while basking and digesting. A temp gradient is just as important as a uv gradient. If you can find the stamp on the bulb it would help us a lot. You are looking for the brand name, something that says T5 or T8, maybe HO. If you have a T8 it will need to be mounted inside, where your little one can get within 6 inches of it. If it's a T5 this can stay on top of the screen and able to get within 10". It should also say 10.0 hopefully or 5.0 (not good enough for a beardie) There should also be no lens covering the uvb. I can't tell from the picture but I can tell it's a hood type fixture that some do come with a lens. UV cannot penetrate through glass or plastic and only some of it gets through screen. In either case, I would get a new bulb because you don't know for sure how old the one you have is. Depending on brand, the T5 needs replacing yearly and T8 every 6 months. If interested, I know where to get good fixtures and uvb if you are in the US. As far as the glass surfing, it could be a number of reasons. With mine, they either want out, food or drink, or to poop. I would just keep the area he's surfing more clear of furnishings. There isn't much else to do about reflection as you have the sides covered. But he may not be freaking out on his reflection either. You could let him roam around a secure area outside his enclosure? Keep in mind this is an adjustment period for him too.
That's great you are doing research. When I got my first beardie I didn't know there was research to be done so you are on a better track than when I started. I got advice from the pet store and previous owner that obviously didn't research much either.