How many of those tubes altogether? The wife is using my old T-12 unit I made almost 20 years ago. I took the parts off of 4 shop lights and mounted them on a sheet of plywood so the tubes could be closer together. Getting harder to find decent 40W tubes for them. Liked the Daylight Ultra that has 3200 lumens @ 6400K. I see those ones of yours are supposed to be 5000lumens. Seems to grow plants pretty good.
You going to flower with that rig too? Got any 2700K tubes for that? Warm white for that.
I do larger veg and flower under HID light and have a good assortment. Just bought a used little grow tent and LED COB light and my 9 foot high plants are looking lovely under it so have spot fro small plants while I flower in the grow room down in the basement.
That plant of yours looks healthy as hell man. You must be doing something right!