Harbor Freight sells a nice portable bike jack for around $100 and it is well worth the cost as you will be using it a lot.
I have dropped my rear off a couple of times and I didn't have to remove the muffler. The nut is on the right side and a good open end metric wrench will take it off. Back off the tension nuts and you will also have to remove the brake caliper mount on the right side to move the caliper out of the way. Pull the bolt, drop the wheel and push it forward to take the belt off and Voila...tire off. I don't have a tension tool so I used the guide bars on the side of the window and pushed up with my finger and tightened the tensioners until I could only push up to the first bar.
U.S. Army Medical Corp SFC (Ret)
2013 Road Star Silverado