Recommendations are difficult on this subject as the quality of the products don't necessarily align with the prices, and because we all have our own preferences. Definitely concur on the inflatable harness vest & tether.
Given your route, I would recommend two criteria for you:
-- be sure to have a set of bib-type trousers, for 2 reasons: you will see regular (tho' short duration) convective-borne rain, and you will find night watches bring lots of condensation onto the cockpit surfaces. Bib/pants will help you stay dry in both cases.
-- given your sub-tropical route, I'd look for a lighter-weight, breathable jacket with the basic offshore features (high collar, good wrist seals, multiple pockets and a hood) rather than one of the heavier models. To this I'd take add a fleece layer for the cold frontal weather you will occasionally see early in the passage.
Have a good run and enjoy!