All sounds good to me, but two of everything is good advice.
Not sure about breeders but I can highly reccomend the 6.5" silent spinners. We use them for four russian hybrids and three roborovskis and they go down wonderfully with everyone, so I do think thats a great wheel choice
Toys I'd reccomend... The P@H yellow cube (the only item of theirs I would reccomend reguarly
), since our russian dwarf hybrid group all adore them, and so do all of our other hams.
Er... Other than that it depends on the hamster a bit more, but the savic beehive style houses are good (all of our dwarves adore them), except that when fully grown the russian species can need to squish themselves a bit to get in - not that it stops our lot lol. They're by far the favourite houses and always have been.
Here are our ZZ2 setups, but er... the third pic is a bit hard to see I'm afraid as we didn't take the lid off before taking it, and the meshed lid makes it harder to see the items inside. The items are mostly the same as the second pic, just in a different layout with an extra wheel added (and the sand area removed, but it'll return eventually.)
The first is a lone male roborovski dwarf, the second was a lone female, and the third is what its changed to now that the female has company - but it is
not as safe as two of everything identical would be, we just let them try this (as everything is similar and for each item at least one other serves the same purpose in a similar way) and its worked, but we are constantly aware for signs it'll need to be changed to a simple setup with two of everything the same.
Oh and both are due to change a bit when we get an ECF (pet website) order delivered hopefully within the next week.