You can do very well at 7 months. our home resort is SSR. We go every August for our main vacation (more than a week) plus shorter trips at more random times during the year and these have been our
DVC vacations:
Our first year in Aug, we booked a VWL studio for a week about 2 months before - with 2 nights in a studio at the BC.
Last Aug, I booked a BLT LV studio at 7 months.
This summer, I booked a BLT 2 BR MK view at 7 months.
On relatively short notice, I have also booked shorter stays throughout the year at BLT, BWV, AKV.
At 7 months exactly, I have been lucky - though you can't always get the view you want. I have never tried for a major holiday like Christmas or New Years as the huge crowds and high airfare are unappealing to me.
On shorter notice, I ask what they have available and for how many nights - calling and waitlisting. I like most of the DVC resorts and on short notice, I am very flexible and take what is available - everything is pretty good in my opinion. (for example, I will say what do you have avail for certain nights or for a few nights in april etc). I have always ended up with something good.