We are about to embark ….
verb (used without object)
to board a ship, aircraft, or other vehicle, as for a journey.
to start an enterprise, business, etc.
on a LONG journey…
noun, plural jour·neys,verb, jour·neyed, jour·ney·ing.
a traveling from one place to another, usually taking arather long time; trip: a six-day journey across the desert.
a distance, course, or area traveled or suitable fortraveling: a desert journey.
a period of travel: a week's journey.
passage or progress from one stage to another: the journeyto success.