14 gauge "sheathed" wire is nice looking, and for some reason, slightly less expensive on this site than the plain insulated wire.
what is you budget
to finish out your system ?
do you want a full 5.1 home theater set-up ?
your older JVC receiver can handle Dolby Digital 5.1 with Toslink optical fiber connections between a DVD player and/or a cable or satellite box.....or the optical out from your TV if you are using a TV antenna to receive programming "over-the-air" (using the internal tuner on the TV)
is an excellent source of current new production Polk Monitor (Series II) speakers. They have a daily-weekly email sale and you can sign up for their "e-Blast" email delivery - this will let you know when the Monitors are on sale (usually with free shipping). You may have to wait a couple of weeks, but most of the Monitor series come up for sale (30's through the 70's) every month or so.
for a small room, a set of 4 Monitor 30 bookshelf speakers and a CS1 center channel will make a nice 5 speaker setup - add separate powered subwoofer when the budget allows. You can also consider using some of the larger Polk Monitor speakers for the "front 3" speakers, since they carry about 90% of the movie soundtrack audio information. The largest bookshelf speakers are the Monitor 40's, then you get into the tower speaker configurations - - - the Monitor 50, 60, and 70 towers.