Yes get rid of the red light.
Firstly, the red light would only be used at night. Bearded dragons can see this red light and it disrupts their sleep. They need complete darkness. So it's useless.
You need two bulbs.
A
uvb bulb. You have that. The reptisun 10.0
A basking bulb. You need to go buy that. You can use a normal household bulb as long as it's not one of the coil spiral bulbs (CFL's). All you need this bulb to do is give you the heat you need, and provide a bright white light. Don't buy a soft white or a yellowish light, buy a light with a crisper, whiter light output. You most likely will have to buy a couple different wattages until you find which works for you.
Your powersun currently provides uvb and heat. You already have a good uvb, so you need to get rid of the powersun as you can't turn off it's uvb and make it just give heat. You need a heat bulb.
-Brandon