Details need be legalised and arranged 2 years before the set off.
This initiative is a non for profit basis. No salary is expected. No one will benefit financially from it. All participants are contributors to the project. Their voluntary financial contribution is 100% spent towards the boat expenses.
A boat will be acquired for the project and sold thereafter. Any surplus will be refunded to the contributors.
Voluntary contributions will be done through "shares".
During the trip, costs will be kept to a minimum: avoiding expensive marinas, privileged anchoring, etc. Financing should by no means be an obstacle to any participant to the project. And cost mitigations are possible.