The wheel that I had for Tegan was the Silent Spinner and it was super nice and quiet.
Have you seen these?
They double the space they have and it adds a vertical aspect as well. My local pet store has them, but they have different styles around and what not. I don't know if petsmart or petco has them but it might be something to consider if you ever expand, or want to have some spoiled mice.
Aspen bedding is good. I liked mine when I had it. And are you thinking of paper bedding or just paper? Paper bedding (ie: carefresh) is quite expensive.
And I always gave Tegan 2 kleenex whenever I would change her bedding and she'd take it in and burrow in her house with it. TP would work too and they probably would have fun shredding it.
Good luck and can't wait for pics! :D