The Silver Comet trail is probably going to be your quick-hit especially with 3 days stay..... Paved and good for a road or gravel bike...
I'll be down there as well over the Thanksgiving holiday and plan on doing some riding. I'm driving so bringing both the road bike and the mtb.
Look to hit the Silver Comet on my road bike, then some singletrack trails up in the Canton area such as the Taylor Randahl Memorial Bike Trails at Olde Rope Mill Park....and Blankets Creek.
Haven't ridden them yet but have friends/family that have and they speak highly of them...
Hopefully you'll get some better input on your post from some locals.... (be interested myself in what the locals have to say....)