Sounds exciting! I haven't any direct African SWFF experience but have some suggestions anyway:
- stripping basket might help, we use them regularly here to hold the running line out of harms way when wading or when obstacles are underfoot; they increase the distance you can shoot line while reducing the time needed to clear loops
- backing should be minimum 30# dacron or 50# gelspun and carefully attached both to the arbor but more importantly to the fly line; large SW species can easily spool you and any imperfections will result in a lost line. Maybe a spare line or two would be a good idea
- check into the presentations you will be making, most likely a tropical coating / floating or ghost tip will be the ticket for large streamers, short stout heads push bigger flies better.
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