CTY Bike Questions

I’m looking to purchase either the cty 1.1 or 2.1 and I have a few questions. 
min 5’10” and the length from my foot to my groin is 33 inches. I wanted a step through bike for outfit convenience. But I’m a little confused as the largest size available is medium and goes to 5’9” on the height chart. Last thing I want is my legs scrunched up while I’m riding.

also I’m not sure I understand the difference between 2.1 and 1.1. Is 2.1 just a newer and improved model?

and finally does anyone have experience with adding baskets to either bike? I will want to buy an attachment and just want one that has the best balance in case I go to a store to buy something. Should I get a front, back, or basket that rests on the wheel front or back?