There are a number of boats on delivery that leave Cape Town during February and March for the Med. The route is from Cape Town to St Helena then past Ascension towards the Cape Verde Islands. If the winds are right, a stop in Mindelo (Sao Vincent) is possible but quite often the winds push the boats about 100 miles to the west of the islands. The boats then head towards the Azores, with some stopping there but most turning east well south of the Azores and heading for Gibraltar and then into the Med.
It is a tough trip north of the equator with a lot of slamming into oncoming seas.
Your best bet is to contact some of the delivery companies towards the end of the year and put your names down on their crew lists. PM me and I will give you email address to send your details to.
The Delivery Guy - Now retired after sailing over 400,000 nm