Teen! Congrats on doing an African trip on yr own!
While you're still at home, do 'shoot in' another bow string and cable set to bring along!
You don't have to bring a big bow case!
Firstly, take all the tuning measurements of the bow...brace height etc. Disassemble your bow by backing off the limb bolts and taking off the string. Then collapse the bow and use masking tape to tape the limbs and cables etc onto the riser. I'm sure you're smart enough to rebuild it at the other end!!.... if not, yr PH mate can help! Time is on your side! Take a piece of 2 or 3" PVC thin walled pipe long enough to house your arrows (no more'n 2 doz!) and pack them into the tube alternating ends so they're tight in there and tape the ends shut! Put your broad heads into a separate box and tape it shut...no need to bring more than 10 at most! You may want to pack the sight into a box too. Then wrap the whole lot up in yr clothes...they can ironed here!! and pack it all into a convenient sized duffle bag. One with a hard bottom! It'll all be quite safe like that and no issues with borders and customs etc! Put yr bino's in your carry one luggage....baggage handlers love to steal stuff like that!
Enjoy!