Hi Hermanth,
I hope you find this message before you depart. Soyo is pretty much isolated from Luanda and supplies at local markets are very limited. Most supplies are brought in sporadically from Luanda which means costs will likely be more expensive. If you are allowed any kind of shipment or extra baggage allowance, you should fill it to the maximum weight with medicines such as ibuprofin, anti-diarhea, antihistamines, antibiotics, and anything else you may have needed in the past few years.
Also, comforts from home, favorite spices, etc. I cannot emphasize enough the limit of supplies in your area. Things are improving, but it is happening slowly.
There is a pretty significant list of vaccinations that you should get before arriving in Angola including the live vaccine for Polio which has recently resurfaced in the area. Hopefully, your company will supply you with the right vaccines.
Good luck