I wouldn't blow whatever nuts you have squirreled away on getting any time on these planes. 2-3 hours is not a hell of a lot in the grand scheme of things. And as mentioned before operators will train you on the aircraft. I don't think many would keep a straight face if you told them you had six hours on type. For most out here that's a days flying. Best to save your money, what might be worth it is to try and get hold of the manuals. Study up on them and know the aircraft, that will be more useful to you. And if you have decided you know where your going to try your luck try and get the aviation charts and perhaps a basic GPS.
Tanzania, Kenya and Malawi mainly use the 206 over the 210 Mozambique too from what I recall.
In Tanzania they want 200 hours on type for a straight onto your license endorsement, and think you would still need to sit the TTR and do a proficiency check.