You have a good start. At least the bike has good lines. I hear ya on the parts, but making stuff work is half the fun, right?! Crazy how I was able to find more parts for my '82 honda then this. If you want to lower the rear, try honda rebel shocks. they're around 10 1/2 inches or shorty shocks. I got some for the honda a dimecitycycles, but I'm shure you could goggle it. Good luck with it.
My honda felt ok. I had them set hard so it wouldn't bottom out. It wasn't any worse then the honda spirit I had. There's always a compromise. Of course shock travel will be less then now. I haven't used the rebel shocks, but a friend has. Said they weren't bad. Rebel's can be had for around $40. New shorty shocks around $80. Just lowering the rear does affect how it handles. Made mine feel heavier then it was. Just a bit more work in the turns.