Bonded storage is expensive
If you are storing it on the LA end without clearing customs it will be very expensive. One option would be to ship it by sea and use the shipping time as your time in Africa. It took 6 weeks for my bike to get from the UK to Phoenix. Another option would be to organize to have it clear customs before being stored in the USA. You will either have to pay out on the customs broker or the bonded storage.
1998 E350 Quigley Diesel Ambo Camper For Sale
63 R60/2 BMW hack, 2 Dakars & K12LT