My data is not for a Gen 5, but I can't imagine it could be too different.
I got a pair of Wolf canisters, a riser-Y pipe, and the rear mounting bracket and licence plate bracket when I picked up my system - no undertray included. The understanding that I have is that what Wolf provided was fairly basic anyway.
I just decided to make a new inner fender, and I started by making cardboard templates (apologies for the pic quality, taken on a phone camera a few years back):
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templates.jpg
From these, I cut sheet aluminium to the templates, and bent it to suit, then had an OzVFR mate tee up a former colleague who was handy at welding aluminium:
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alloy undertray.jpg
As the upper rails kink in towards each other where they mount to the main frame, I had to put a fold in each side and bend it in slightly, so the front-most face of the box is actually trapezoidal in shape. This makes it really easy to drop the box out of the subframe, so it was a worthwhile mod.
The shape of the rear section that goes over the top of the canisters was dictated by the height of the canisters, and the crossbrace that sits under the pillion seat.
The 'sunken' part over the riser pipe is so that the original seat lugs that slip inside the frame rails and prevent lateral movement could remain; I couldn't be bothered working out a different way to address this although it ended up being a fair bit of work. I made a CF cover for the riser pipes which is to be riveted in place. The oblique shape of the cut-out is because the y-pipe is offset, the 5th Gen Wolf riser was more symmetrical.
Because of the size of the battery box, the rear pair of coils had to be relocated to the side of the bike - this was simply a mistake I made by not planning well enough. And even though the box is bigger, it's still not big enough to provide practical storage, it will only fit a battery, a toolkit and a puncture kit - I'd make it even bigger next time around (as if that's going to happen).
As far as ride height goes - I cut the rear subframe gusset under the seat lock to allow the canisters to sit about 20mm higher - this meant that they sat a bit closer to the front of the bike (i.e. the rake of the riser pipe was decreased).
I then flipped my eccentric, but this isn't an option for you
Although you only have 6" clearance ATM, once the plastic inner fender is out you should find you can get the canisters closer to the seat. Then you'll probably have to rely on a shimmed shock to get any additional clearance you require. At 3.25" dia, your canisters will help a lot, and if the Gen 5 subframe rails are 8" apart like on the Gen 4, you should be able to get them fitted with a 1.5" gap between them which will further aid clearance.
The Wolf cans are 4" diameter, I had to use a hydraulic jack to spread the frame rails by 0.25" to give enough clearance for my inner fender.
The seat needed to have some plastic trimmed away to clear the new inner fender when the seat is being slid into place. I've also covered the underside with adhesive insulative foil.