Sunshine Blue doesn't require much,about 150 chill hours,between 45-32F.They are suppose to grow in zone 5,so they should be okay outside,especially if using your cover material.The garage could work too,if it's under 45.
One Winter,I made a frame out of coat hanger wire and put plastic over it to protect them from the snow,since they didn't lose their leaves. Brady

This post was edited by Bradybb on Sun, Oct 20, 13 at 17:12

I'm in Northern KY and have a smaller, 3yr old Sunshine Blue that I left outside in it's pot uncovered last winter. It survived 7F a couple of times but had some minor die back. It has been fine this year and put on some growth. The roots are probably the more important part to protect. You can probably just leave it outside but put some dirt, straw, leaves, or gravel around the pot to protect the roots. The burlap would probably be fine for the top of the plant, just try not to lay it directly on the branches. If you have a couple of thicker gauge wires, make 2 intersecting (crossing) loops from the wire over the branches and then drape the burlap over the plant, keeping it just off of the branches. I had a couple of tifblue rabbiteye blueberries planted last year and they also did fine uncovered all winter.

Thanks guys- I will probably just wrap it, leave it under the patio roof, and bring it into the garage during the super cold snaps.

Although if my wooly worm observations hold true it should be quite a mild winter. Fingers crossed!