2 things I learned in Australia:
1. Rim locks and mousse...not needed. We dumped the rim locks after the first day. We pulled the mousse out of the tires and relubed them every night and one mousse lasted 3 or so days until something sliced it up inside the tire.
2. I didn't see whether you had a mechanic or not but having a mechanic is key. I did some of my own work in Australia but shared a mechanic with another rider and that was about the best thing to have was someone else to deal with the bike. It was nice in Australia but could be critical in Dakar.
My intuition nearly makes up for my lack of good judgement.
Just installed my new trolling motor