I do regular mission work in Tanzania. I just got back from a 3 week trip a few days ago.
I have had LOTS of interaction with SMA priests. A good friend of mine is an Irish SMA priest. He was recently transferred back to Ireland, as he is 79 and life in rural Tanzania is a bit harsh. Even so, he will be doing mission preaching in Europe now as his regular assignment, so he is not retired
Last week I had got to meet a French Canadian SMA priest. Great guy, he didn't laugh too much at my very poor French. He has been working in Tanzania\Kenya for the last 20 years.
Yes there are risks in Africa, but it is most certainly do-able. I spend several weeks a year in rural Tanzania, and love every minute. Yes, it is hot there, with no air conditioning. Yes, you miss out on fast food and take-out Chinese. The food gets monotonous. (rice, beans, mango, bananas, greens, little meat)
But the people make up for it, I love them all to bits!!
The poverty in too many locations is simply crippling. The area where I go has a average family annual income of about $600.
So a lot of the work an SMA priest would do will be physical as well as spiritual. Helping to dig wells, so an outstation ( village too small to have a parish) has clean water year round. You will farm some of your own food, so you do not have spend limited parish funds on food. Your rectory will most likely have a single LED bulb, powered by a solar panel and car battery. It would very much be a life of service to the very poor. But it will be spiritually rich.