Just getting caught up on the thread,..
do your best with what you’ve got. If it’s another 2-3 weeks until you can afford a 100w quantum board or bar then just hold these in veg, spend some time doing some LST to train them lower with the added veg time, then flip once you get a light that will give you results you can be happy with in flower.
I know where ur at, easy to say ‘buy this, change that’ and it can be good advice bjt not always immediately useful when you don’t have a pile of cash to put up on a hobby.
I keep reading ur posts about PAR and lumens, andwhile these are valid measurements of light, focus on measuring PPFD and or DLI - a $3 app goes a loooooong way here. These are just more standard ways that growers measure light output in horticultural circles.