Contact Brian Calvert who recently did the crossing on his 48 Selene "Further" - his website is complete with lots of details and has the requisite contact information. He went the Marquessas route.
BTW, Insequent on this site did a great job on detailing his US purchase, refitting and travel by sea or freighter deck decision making. A face to face with him would be a worthwhile experience I'd guess.
Carry lots of fuel to allow you twin operation at flank speed to avoid weather. And, watch out for those pesky containers! What a fun trip, with your experience it is very doable.
Brian Pemberton at Northwest Explorations in Bellingham is a good source of information for preparing a GB for open water.