Your list is pretty good and I would set off with that. You do not say where you are heading. My experience is that the more you get into the developing (and even underdeveloped); the less spares you need. In the developing world everything you need can be manufactured and often to a higher standard than that 'original part'.

In my experience; if you stay in the 'western' world you can get spares shipped in easily. If you are in the 'developing world'; spares can be manufactured. So I would not worry too much. I would just carry lots of the small things like washers, cable ties, duct tape, lots of screws and bolts. For the rest, it can be found.

Let me just end with a tale from one of my good friends who is a professional yacht skipper of some 25 years: "you really only need duct tape and WD40 on a yacht. The rule is: if it moves and it shouldn't: duct tape. If it doesn't move and it should: WD40". Very true in my experience.