The UFOs are good in theory.. but junk in their current reality.
Go full CFL or small HPS

Flowering Spectrum:
2300K aka "Warm White"

Veg Spectrum:
6300K aka "Daylight"


Theres a 4700K in between called Cool White.. but it's mostly useless.
It should also be noted that CFL intensity drops off sharply with distance so they will need to be close to your plants