We can call in the dogs and piss on the fire -- the hunt is over. I've ordered a Marantz NR1200 and a pair of JBL A170s. I went with floorstanders to save the cost of stands and, possibly, the cost of a sub. I want to thank all you stereo savages for your help.
I talked to a tech at JBL about speaker wire. He suggested 12 or 14 gauge regular old wire. He didn't know anything about fancy-shmancy wire that I've seen advertised. I currently have a 30-year-old product called Monster wire. If anyone here has any suggestions, I'd love to hear them.