okay so not an expert, but i'll try to help
1) i don't have a zz1 so am not 100% sure but the 6.5" silent spinner i think from others pics fits fine
2) The ingredients mention sugar, so i'd avoid it personally, but again i would clarify with someone more knowledgable.
3) it will likely take time for her to not see you as a threat, spend time sitting and talking to her during her normal waking hours, and try putting your hands in the cage to give her treats. There's great taming tips on the wiki link (top left) and tame hamsters,(whilst they will always flinch or freeze when scared) are less likely to be as cautious of you.
4) for playpens see...
http://www.hamstercentral.com/commun...x-playpen.html
Playpens - post pics of yours!
Hope at least some of this helps