rotoiti,
The Zero is extremely easy to ride, even for an inexperienced rider. However, I still strongly recommend the MSF course. For customers that purchase a Zero through us, we offer to cover the cost of the MSF course. We want to make sure they ride safely and with confidence on their new bike.
The Zero S should easily make your roundtrip commute, but it's always nice to charge up at work and not ever have to worry about range. You should take a closer look at the charging stations, they may already have a standard AC outlet. If not, we have a J1772 adapter as an optional accessory.
Generally speaking, I've found that our taller customers prefer the seat height of the Zero DS, but everyone has different tastes. You should go down to your local dealer and throw a leg over one to see for yourself.
A the moment, the only tax incentive in California is the $900 Rebate. It is very simple to collect, we provide all our customers with the necessary paperwork and they usually receive a check in the mail within weeks of their purchase.
Not sure what part of California you are in, but we are the Los Angeles based dealer, and the Number One Zero Motorcycle Dealer Worldwide. We'd be happy to answer any questions you have about the bikes, we ride them everyday and know them intimately. We are extremely focused on customer satisfaction, the last thing we want is for our customers to have unrealistic expectations about the bike's capabilities, and end up with something that will not meet their needs.
You can call us at 323.654.8271 or reach me by email at harlan (at) hollywoodelectrics.com