Question about my speakers & banana plugs?

[A Tortured Duckling]

Hello Folks,

A while back i purchased the Onkyo HT-S6200, hooked it up with the included speaker wire and didn't bother with anything special. However, the wife and i bought a house and we moved in yesterday. I decided to upgrade my speaker wire to a 16G and now i'm wondering if i can use Banana Plugs for both my speakers and my receiver. Also, i really don't want to buy any speaker stands so i looked around and i found these wall mounts on Monoprice. They look just like what i'd want to use, but will they work with the speakers that came with the HT-6200? I know it's a lot of questions, but i really want to hook my stuff up as best as i can without spending a whole lot of money. Any help is greatly appreciated!

Here is a picture i took of the wire input on the Onkyo speakers for reference.