Good!! I'm so excited for you! I love the thrill of getting a new ham
I found that when I got my substrate in the wheel wouldn't turn at all. I can recommend the regular size silent spinner for dwarfies - they spin really freely and are very quiet! (although boris only ever does a couple of runs on his andthen gets off - he is a lazy ham!)
Toilet roll tubes are great and any type of cardboard box they love too. I brought Boris a lovely Sputnik - the domed shaped ones that hang from the roof - he didn't go near it, not interested, he prefers an old square tissue box! He is cheap and easy to please!
Oh and be carefull with the logs with holes in at p@h (if thats where you are going for toys) as the holes are way too small even for a dwarf, Boris was fine when I first got him but he quickly grew out of it and he only realised one day when he got stuck in it!