Congrats on your new hamster! And it is wonderful to hear that you got a rescue ham. I am sure he will be very loved
does he have a name? When do we get to see pictures?
Re the wheel, how small is small? Do you know how much he weighs? My Mushu was already cramped in a 7.5 inch wheel when he was 8-10 weeks old and under 100g. He took to his 12 inch silent runner immediately! So, I do not think he really could be too small for a 12 inch wheel. You'll probably find he has no trouble running on it and it's good to have room for growth.