those are fine looking hems. I have trouble with a hemming foot on nylon---with 1.1 it is nearly impossible. When it is "working" it is beautiful, but when inevitably things go bad it is really hard for me to recover.
Being bridge hammock minded I see this cut and it is exactly the same as one might do for a 9' long bridge. That suggests that if there were a fast "field whipping" method you could bring this body along and decide at camp whether to pitch as a bridge or normally. Why this choice? A normal hammock is a lot easier to snug up under a standard tarp. So if there was weather to deal with you could pitch as you have done. If you're feeling like laying flat that night, then hang it as a bridge.
The big unknown here is how the hammock would feel when pitched normally if the edges had the suspension webbing.