How many plants to grow in 120x240x235 cm grow tent

From a fellow grower: Can you suggest me how many seeds/plants i can buy for a wxlxh 120cm x 240cm x 235cm high grow tent with 2x600W lamps? How many plants for optimal thc levels?

Just depends on what type of growing method the person is trying to achieve.
You could run 10 plants or 50 plants.
Optimal thc percentages are going to come from a proper environment and proper light levels.