Grow room

Hello.
I need help with my new tent !
I got 2.4x1.2x2 how you think , wich way is better ...
4x 400w HPS or 2x600W ?
i got 8" fan out and 2x4" fan in..
how many plants i can put there ? about 8 ? or more maybe ?
maybe some got think better for that tent ?

please specify feet or meters when posting, im assuming you mean meters.

2 600s would be great, and still be more efficient than the 4x400s.

If you can, go with 2x 1000s and you will be very happy