My friend just got to Hiva Oa a few days ago; was stuck in ITCZ for almost a week. It's a hell of a long trip, you're going to put the boat through its paces, and where you're going (the Marquesas) isn't exactly a yacht mega center. I spent 30 minutes on the phone
with the DHL guy and he couldn't even find Atuona (or any variation of the spelling) in his computer.
I do deliveries but I wouldn't solo that route
. Take someone that you would feel comfortable being master.
If I'm not mistaken your weather
window is closing in you as well. Hurricanes hit Mexico
starting in June so if you're not in the ITCZ by then you're flirting with danger
. Next window is January or waiting again till next spring.
My $0.02. I can give you the email
of my friend who just got there if you send me a PM. He's on sailmail so coverage is shotty.