Hi there & welcome to the forum

Quite the "travelling wilbury" - how adventurous to have worked in such unusual places
With regards to leaving now or next year - why not search the job sites - see what is available in your field & when the application dates close, then decide. IMHO if they're advertising & closing dates are Oct & Nov then it would be good to get there.
Perhaps even apply online & let them know in your covering letter when you plan on arriving & would be available for a personal interview.
Its easier for you to get up & go than if you were married with children & settled.
If you're financially in a position to look after yourself for 3 to 4 months - then what are you waiting for

BUT then again - if your house is on the market its not a good idea to leave it empty either - unless you have someone that can look after it for you. & perhaps give a family member in SA power of attorney to sign on your behalf.
Cause once you're there & get a job offer - your future employer might not be too pleased if you had to leave to come back to SA to first sell up & pack and and and...
Good luck with your plans - hope it all falls into place for you