Hey, need so advice on a franken board.

(Lemons); I upgraded my SAB tuttle based gear to Code Foils and dabbled with winGfoiling with an cheap Gong HiPe inflatable. I am frustrated, not as fun as windfoiling/free riding.
So, I got a Slingshot JackPlate for my board, thinking I could bolt the Code Mast foil plate on to it....CAN'T...the foil mast holes do not line up on the plate.
(Lemonade)? The Gong HiPe was first Gen and old, so I cut the carbon mast base out of it with plans to "bolt it into the jack plate, giving me adjustable tracks. I can trim the carbon plate to fit.

My Franken board starts here. I got options, on the "
track plate -to - mast track length'. I desire free riding with my 5.5m to 3.8m sails. Moderate to high wind days. The Code fuse overall length is about 30" from wing to tail.
I see lots of discussion on this from Balz'esque...33" to from UJ, to Wing..as well as ...nose mounted mast tracks ...42" UJ to wing...Logosz Alien Boards.
What are your thoughts? Could also lengthen the board tail by reverse mounting the carbon foil plate.
Here are some pics

Or, this and lengthen the board. I know others on this forum have done this

What is the right UJ mast track to Tuttle length?
THX!!!