Is this root bound or deficiency? Help a girl out!!

I know she needs way bigger pot but currently constructing veg room. Don’t have enough room to up pot yet. Honestly didn’t expect her to be this big this fast. Will have in 3 days. Planned on being done by now but as we all know shit always takes longer then expected. Just curious if this is root bound symptom or a deficiency maybe caused by root bound? Still a novice thanks for any help in advance.
Gh trio minus cal mag I’m using tap
Ph 6-6.3
Feed water water feed
About 500 ppm
Runoff 300ish 6.2ph-+ a little
2000 watt led about 3 feet away(too big?)
Plenty of air movement and air exchange.
Daytime temp 75-80 night 62-68

Both rootbound and nitrogen deficient

Is nitrogen def caused from being root bound and plant can’t get enough nutrients? Or just need more when I feed?

Likely just because its rootbound. Check your roots when the soil dries a bit. I wouldnt feed more. The transplant should fix things up

Looks like not enough water, then too much water to me, but I don't know shit so good luck lol

Your plant is short on Mg...however, I wouldn't do much until you get her up potted. Once she's in her new home, and she gets settled, then attack what you perceive as your deficiencies. I would not do anything until you reach that point. Pumping too much of anything into a small pot could lead to more issues. Don't sweat it...good luck.