What I meant was what is the area of the canopy you want to illuminate? You’ll need space to access your plants. If you assume a 10" access aisle down one side, and a 7 foot depth, that’s 17.5 s.f. Do you need 17.5 s.f. of veg space? If so, use @anon58740919’s higher estimates (480w, 14 strips) in a SolStix rack setup.
But unless you’ve got a mega-tent, I bet you can get away with a lot less - 6-10 s.f. would grow a lot of clones/moms/seedlings to feed into a tent. In that case a couple of SolSheet X’s run off a 320 w driver would give you plenty of lumen-power for your needs.
-b420