The map # for the area is actually #6036. That will cover 5-mile bay to the west arm of Nippising and everwhere you will fish in between. You can get it from bigwoodssports.com. They will ship it to the US without any issues.
I will be making my first trip to Lunge this spring (June 5-12), so I can't comment on the lodge, but have heard nothing but good things. In all of my past trips there, I have stayed at Casablanca Lodge. Bryan is having issues with the place and looking to sell, so his prices have skyrocketed, hence why we are switching it up this year. Mike and Steve have been very helpful with booking Lunge for this year.
We primarily fish for pike and muskie and I'd be happy to share some good areas with you. I don't proclaim to be an "expert" on the Upper French, but we have caught our fair share of big (40"+) pike and big (50"+) muskie. Often times you have to sort through some smaller fish, but there are monsters in this area...I mean monsters. It's a great part of the river. Feel free to send me a PM anytime.
-Gino