Sounds good, but I can tell you from making Skeeter Pee, after fermentation starts, it is very hard to stop. I added 2 bottles of lemon juice, which had 2 types of preservatives in it, not to mention high acid from the lemon juice itself. My must didn't even hiccup. I think at this point you would be fine adding more cans with preservatives. My worry, it won't be medium bodied, but light. I have seen others even recommend up to 5 cans. But I have never made this type of wine, so I am just going off of what others have said.