I think what he is asking is, is there really a way to blast your discs so that you could play several throws with that one initial charge? I think not.
If not, (i.e. you charge the disc before each throw) then it gets much simple, just go with what's effective enough and easy to carry. I used to have a keychain 1-LED UV light and even that was enough. No need to lug around a massive lightsaber or a UV light from which you need to protect yourself (I actually laughed aloud at that) if the difference to a "normal" light is negligible.
UV light is more effective than normal. It also will not mess your night vision. If you have to do it with a normal light, just do it behind your back and dont look at it if you want to keep seeing in the dark.
I think some people build some light rigs inside the bag to keep a constant charging atmosphere in there, so as to avoid the few seconds of charging before each throw, but that sounds like too much work. No need to overcomplicate things.