wonder if AYH/Youth Hostel international still does? I helped on a Cal coast trip in '87

backcountry bike tours, , Cycle Oregon, and several other business ventures
, do the heavy lifting , and sag and haul your stuff.
as far as across the continent,.. maybe ACA ..
at least you might find a travel companion off their classifieds to do the trip too..

Solo, I've landed at the airport or ferry terminal,in foreign countries
and just got a paper map, an winged it myself,
wouldn't think it that difficult .. except .. you have been reading and seeing
the sensationalist news about your own county,
and not much
about the un dramatic things people do for each other all the time.