apart from the obvious limitation of your fuel
range,and finding fuel
stops,the cyclone season in the Mozambique chanel is over,being winter in southern Africa
,leaving with a strong SW or NE is going to be rough,so you will need to pick your weather
for leaving very carefully.
however the further north you get the calmer conditions,with SE winds predominate and calms,will prevail,possibly a good idea , with a good window is to cross to southern mada at the earliest opurtunity then carry on north to nosey be'under the lee of the mainland with numerous overnight stops at reefs
and island just off the west coast
hovever care must be taken when close inshore for the powerful squalls that arrive with a change in wind
direction if anchored in the lee of some anchorages
that can quickly become unteanable at night,as the land cools.