Very basic 5.1 system, need some help

I don't know anything about audio, but just got a projector and have done a bit of research on cheap 5.1 setups.

Most people here recommend the Denon S540BT which I picked up with the Parts Express Bundle. With a $15 off coupon at parts express and shipping it was around $350 for the set. It's arriving Friday so can't tell you how it sounds, but seemed to be the best set for the money. I liked it because the reviews were good for everything, and the speakers come with mounts and wire so I don't have to spend anything else.

A post of mine from a few days ago might have some other suggestions.

/r/BudgetAudiophile Thread