Studies for 7 and 66, but will be taking 65, will I be OK?

I was moving forward with the 7 and 66 and was getting mid 80's scores with my kaplan study materials, but that opportunity had a bazaar outcome and is no longer available. I would like to take the 65 on my own since I no longer have a 7 sponsor along with a few other reason that I don't want to elaborate on.

Either way, what I am interested in is knowing that the material I have studied for in the 7 and 66 will cover all that would be presented on the 65. If anyone can provide detail based on their experience it would be appreciated.