Which pool light

[Imlon2]

I will be installing a 20x40’ Mountain Loch (like a kidney with an extra pump out) vinyl In-ground pool next spring.

Will 1 light be enough, will 2 be too much? Looking at either the 12 volt Pentair or Hayward. Color changing on one transformer.

Should I be looking at a different light style, 1 of those or 2?

Also, are the Pentair and Hayward enter changeable in their housing?