Dont waste your time with the UK thing, unless you have family ties of course in which case dig deep it'll make your eyes water for the conversion - I have done it and lived to tell the tale - but what about Vietnam,China South Korea, you have an ICAO ATPL go for it you have 300 boeing time hrs , turboprop time. I sincerely understand your just 'testing' opinion, but no one will tell you everything will be alright - it probably will with enough will power you know that already, however what do you want all of us to say?, come here, its great , plenty of work were crying out for people. Whatever you do best of luck.
p.s African wages? what the heck - its all dollars tax free Cessna 210/C208 pilots flying to the lodges in Afrika' have more disposable income than a 737 new hire here in JAA land in what apparently they call the first world.