I’d lean more towards 3 or more than the 2 daily you’ve outlined..
It will take some time and adjusting to find what works but I would want more than just one feeding while lights are on if I had a system set up like this.. in fact, it makes sense to go ahead and do 4 or 5 if you are gonna step it up from 2 daily.
Sticking with 2 daily seems hardly more advantageous than manual watering once a day.