Couple of question has arisen with my upcoming gunite build. (ok maybe a few more than a couple questions)

I want to install glowbright lights on the tanning ledge. Ledge will be 6' wide and 15' long on a rectangle pool that is 15x30. How many of these lights would be sufficient and where would you mount them? On the ledge itself or on the sidewall? Can they be controlled separately by a control panel? Or would they be on when pool lights are on and color change with pool light?

Umbrella mounts. I'd like to add a few umbrella mounts on the tanning ledge just encase I use a umbrella on the ledge. What type to use? Pool will be salt water. Ledge will also have three bubblers on it as well.