Like others have pointed out, your first priority should be to dial in the printer.
As for fixing your existing print, I don't really see any option besides Bondo body filler at this point. Your fear is losing your detail lines, but you will find that spraying anymore will just exacerbate your...
scruff up the surface a bit. Prime with spray adhesive and then mist on a thin coat of whatever paint when the adhesive is tacky. The trick here is control.
There's quite a couple listed on ebay already and alot of sties taking pre-orders; but for those of us that want to pick it up in stores (Target/Walmart) what's the typical lead time from when it hits online stores to physical store shelves???
For the price, I wouldn't mind wearing this around...