Will veg be part of the room as well?
The most efficient layout for a room this size would be a 3x3 9 lighter. And still leave some space for you to work in. I have 3 tables 15ft long by 4 ft wide on wheels. 1 ft off each wall and 1/2 ft isle between them for better airflow. Can be pushed to create. 1.5 ft isle any side. Plants grow to be about 5ft tall on avg and can yield 130 to 165 grams per plant with a root system of a 6 inch Hugo block on top of a uni slab. 90 plants total. Lights mounted as high as possible and tables 1ft off the floor. Giving you a clearance of 36 inches above tops. Par right under 1000 micro mols on tops at full power. With a few wall fan mounts lightly hitting tops and the vflow air doing the main air circulation. And the rest of the items needed for a dialed in room. 5 ton AC split system. Industrial dehumidifier. Humidifier set with. Vpd controller, nest thermostat to control AC via WiFi.
Gavita controller. Co2 burner or co2 tanks. Exhaust with charcoal on roof to help with humidity and clearing of gases in room with passive hepafilter on bottom.
A 3x3 or 4x4 or 5x5 type of
Gavita 1000 de setup provides the most optimal cross lighting possible for best results.
Lights 2.5 ft off wall 5 ft apart from each other measures from center of bulbs. Wide angle beam from left to right of tables for better depth penetration of par inside canopy. 5 ton AC should do it and get you through the hot summers. 4 ton maybe only winter.