Can I use separate brands for my first grow?

Your tent and fan are good. Maybe look at ac infinity tents too
Price was very close and for the extra couple dollars soon as you open the box you can tell it’s quality.
But almost all the stuff is interchangable. Fans will be by common sizes port holes on all tents should accommodate 4"&6"&probably 8"too.
Lighting go for good stuff. LEDs hlg
But hps setups are all about the same. Bulbs matter to some degree. Hortilux is king but cheap ones will still do the job for 1/4 the cost. Those grow kits will gouge your pocket and are lower end equipment. Piece it all by quality and you’ll be much better