hi sae,
going by what i have, for your space i'd suggest 3 fixtures of 315W ceramic lights. 3 or 4 per plant.
yes, that is almost 1000W, but the ceramic bulbs have an advantage with (full) spectrum and have a decent lifetime.
I came from LED, but the ceramic bulbs have won me over.
LED, i'd look into the 600-1000W range for 3 to 4 plants. can be expensive to buy upfront but they do last long.
(if looking at power draw at the wall, look in the 300-500W range, per fixture)
I wish you success with what you decide to go with!
FDP