Like I mention alot I do not believe in recopies but in the process of making wine. That being said, some people favor adding water to dilute muscadine down a bit.
If I was you, I would harvest, crush and destem and and ferment on the skins depending on whether it is red or white. I would then check acid and adjust down to an acceptable level and add sugar until I got a gravity that I would like.
I would then ferment dry and back sweeten as needed after aging. I may or may not use oak.