The little peat pots trays might make your grow tent able to germ much much more, plus they’re biodegradable so win win.
I started 160 individual (80x sunflower, 30x snapdragon, 10x black eye Susan, 40 peppers ) plants in a 3x4 tent with the jiffy peat trays
I know you started in rockwool, but you can germ directly in the peat pot then transfer that to soil.