I've spent many days in that area over the years.
If your planning to go for 2 weeks in Nov you will almost certainly experience 'bad weather' of some form or another at some point, or possibly even for the duration.
The plateau is infamous for several reasons, not least the wind, which often can exceed 120mph. I have personally seen cars blown together in the ski centre carpark in the winter. Apart from that, you could have rain, sleet, snow and whiteout conditions in addition to the wind. It has already snowed there this year.
So, what I'm saying is - plan and prepare. To my mind 2 weeks in Nov is too long without caches or re-supply.
If it was me, I would figure on a basing myself at, say, Cairngorm Lodge or Aviemore SYHAs and then on the basis of as good a forecast as poss (eg. MWIS) plan trips into the hills, camping or bothying overnight within the weather window.
I'd also pay serious attention to my escape routes or locations to bug out to if the weather closes in.
The Cairngorm plateau is a superb environment and a very rewarding spot to visit, but claims lives on a regular basis. A couple winters ago, two fellas died only a few hundred metres from the carpark, unable to move in the conditions.
Don't underestimate the place.
Also, please check out the status of the 'Cairngorm Poo Project'. This system operated in winter via the Ranger service to supply snowholers with the necessary disposable to pack out their own cr@p, but I'm not sure if it operates outside snow cover/freezing conditions anymore.
Stay safe, have fun.
Nick