Hmm, looks interesting, esp for a $100 Wongmart. WM has come a long way in the last 10 years. I'm using a Schwinn Avenue. Nothing spectacular, but it works well after tightening all the spokes and running the wheels in a stand.
Are you using a Dax or Staton, or a home-made rack drive?
Review of Avalon as a high-mileage pedal bike for recreational riding (dude says he rides it even 40mi in a day, with SPD pedals!)
Someone crammed a HT engine and mag wheels into one of those!