I need 'decent' speakers for my cheap system

First, I should probably admit that I still have most of the 'hi-fi' gear that I acquired in the early '80s - which means, of course, that I do not have anything that would be considered 'hi-fi' these days.

Now, to try and make a long story short - I just purchased an almost-new Rotel RA 1070 and RCD 1070 for a VERY attractive price. I was actually looking around for a used Creek integrated amp and a quality CD player, but a friend-of-a-friend was willing to sell this Rotel stuff CHEAP.

So, now I'm looking to replace my old JBLs. I'll need a tuner and some other stuff too but new speakers are first.

I have spousal approval to spend $1K on speakers, which I can probably stretch to $1200 or so. I am hoping to buy a used pair of loudspeakers that will stay with us when I do (eventually) upgrade the amp and CD player. I realize that some of you will say that I should have bought a higher quality amp/source and went for better speakers later - but there is no going back for me now...

I listen to classic rock, blues, and some jazz in my carpeted living room (approx 18X20). I would prefer floorstanding models, but I will audition anything.

What are the most appropriate used loudspeakers in my price range? What about 'affordable' cables?

I would appreciate any assistance!