sorry, that is incorrect.
The booking window is based upon your day of check out. As long as you have points available (incluing banking or borrowed points) you can make a reservation 11 month from your date of check out at your home resort, and 7 months from day of check out for any other DVC resort. Now I know some people are going to jump on me if I don't mention the fact, that you can call day by day and add on to your vacation day by day to get around the day of check out rule. That too is true.
As you can now see, use year has nothing to do with the utility of your time share interest. The only reason why someone may prefer a particular use year over another one, is if they are looking to do and addon to an exisiting contract (when doingg an addon through Disney they require the same use year), or purchase another contract and want the ease of managing all their points. The ease in the latter case, is simply rememdering when to bank to avoid lossing some points by missing cut off dates. But some of the software available free of charge eases a lot of that for you.
I am not at all surprised that your banker is uneasy about timeshares in general. Understandably, they prefer to lend against collateral that they are familiar with ie: your home. I'm sure the interest rate he quoted you was nothing more than a Personal Line of Credit. Nothing more than a credit card rate.
Why not obtain a home equity loan first, then shop fora contract in the resale market. Most Home Equity rates ate prime + 2 points. Approx. 6.75%, sure beats 10.95% that Disney is offering.
You will save BIG $ not only on your interest rate, but also on the price you'll pay for the resale. AND you may be able to find an exisiting contract with BANKED points, hence obtaining a double bonus your first year.