I might be able to do for a temp wheel til the other comes. The one thing I see that can be a potential hazard is the crossbars because if they run out of the wheel before it stops it can hurt them. You did a great job building it but the crossbars could be a problem.
For the time being it should be okay (or you could just let your hedgie run around a bit outside his cage, instead of having him use it). The crossbars are a problem though and with so many of them I see that as a real hazard. It looks like you put a lot of effort into it though! What did you use for the main running surface?