What is your primary objective? If it's to get the supplies to Uganda, then putting to one side for the moment the questions around carrying stuff through the countries involved and finally importing materials and vehicle legally into Uganda, a key question is whether you really want to travel through Egypt? Some travellers are by-passing Egypt because of the difficulties/costs of a carnet/TIP and they're shipping into Port Sudan. However if your primary intent is to see these countries, with a secondary objective of taking supplies to Uganda then it's worth spending the time in Egypt on the way,
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