Klipsch CDT-5800 CII ??

Good day everyone. I recently bought a Denon AVR1613 receiver. My home has a family room with 12 foot ceilings, and is open as it only has two walls and the rest is an open floor plan which flows to the kitchen, etc.

The house is prewired for surround sound in the ceiling for all speakers and the sub is prewired on the right wall of the room. I have been looking at speakers and came across the Klipsch CDT-5800 CII on sale at a local store ($250 each).

1. I would like your opinion on how well these would work in my situation?
2. How well would they match up to my receiver?
3. Could I use another of these speakers as a center channel? if not, which would you recommend?
4. What subwoofer would you recommend as well?

Thank you

What do you by rewire for different type of speaker? Are you referring to non in-ceiling speakers? If so, I would prefer to not rewire anything and buy in-ceiling speakers.

Not sure what you mean by where is all my equipment going? What does that matter?

I don't understand a lot of your questions and what they have to do with my original questions. Can you elaborate on why you are asking them so I can better understand.

I don't really have a budget set in mind but as you can tell by the price range I am asking about, I don't want to spend thousands on the setup.

Yeah, trying to use what is available. Anyone with experience, would you mind chiming in on my questions.

Thanks