That looks good
He'll enjoy the wheel. I agree about the swing - or you could just swap the chains for sisal string or have it hanging lower so if he did get caught in the chains he can still be at ground level and try and free himself.
I wonder where he will nest. Just to warn you, our syrian ignored all houses for nesting unless they were guinea pig sized ones! If there's one you think would be good for a nest you could try putting a bendy stick bridge over the door. That gives a tunnel entrance so tempts them in - and also helps make it dark inside - they go for darkness for nesting.