First of all, just a terminology clarification. You can't buy points from an owner for a one-time stay, and if you could, you wouldn't be able to use them. What you are talking about is
renting a reservation which the owner makes for you.
We are thinking about book a fall trip- sept/oct of 08 how are in advance do I need to start hunting for points if we are thinking about buying them of a
DVC member?
You can start looking as soon as you have your dates
firmly set. If you want to stay at AKV in Sept/Oct '08, AKV owners are already within their 11-month window to make ressies for that period.
One of the critical things you need to understand about renting a DVC ressie, however, is that you can't just change plans. The best mindset with a
DVC rental is that it is 100% non-changeable, non-refundable. If your plans change, the owner you rented from may not be able to help you at all.
For an example of the issues I'm talking about, read this thread:
http://www.disboards.com/showthread.php?t=1638295
Also, If a DVC members primary location is, lets say SSR and we want to book at AKV how does that effect who and how we buy points?
As mentioned above, we can make ressies 11 months prior to the checkOUT date at our home resorts, and 7 months prior at non-home resorts. If you know for sure that you want to stay at a particular resort, and your vacation dates are firmly set and not subject to change, you can make rental arrangements up to 11 months in advance.