Start a business ONLY if you will actually be living there. Otherwise your own family members will eat you alive -- I have heard a million stories first and secondhand. The safest bet is land with proper paperwork.
Berbera is a good choice for future growth, but extremely difficult to invest if you are not a local. Even as a local, the corruption will kill your profits and bankrupt you. I had a relative who lost a ton of money in Berbera even though he is "from" there -- although a diaspora in any case.