This depends a great deal on what kind of wind
you will get and what kind of sail combinations you have for deep down wind
sailing.. We did in 17 days (Las Palmas-St Lucia) , could have done better if we hadn't ripped our spinneaker the 3rd day. We also had very light winds for couple of days. My recommendations;
-don't leave early, trade
winds are setting later each year. Mid-late Jan is ideal.
-you should definately have a down wind sails
whether it be a spinneaker or genneaker. Bring also a second gib that you can rig from the forstay on Helia's. If the wind is DDW and above 15 kts of true, it's very safe and efficient. (main sail will not be hoisted in this case)
-If you want to be fast, be light..the cats are very sensible to weight.