Looks to be an interesting build. I've often thought that the M101 CDN could use the extra length, too. I'm planning on just rebuilding the tongue/drawbar assembly, so will be looking at what you do, which promises considerably more capacity.
1997 FZJ80 The Sacred Cow 152k, 255/85 R16 BFG KM2 on 16x8 Toyota Steels Rims, ARB w/ XRC12, dual batteries/Hellroaring isolator w/ Blue Sea battery switch feeding winch and dual inverters, CDL switch w/ 7-pin mod, cupholders!, 8-ton pintle hitch w/ GI chain plate, blue-PHH, working power antenna, FSM, camper conversion
M101 CDN Tagalong to the boonies, 255/85 BFG KM2 on 16x8 Alloys, w/ custom extra wide fenders, fresh OD paint, bungied tarp and bows