Sorry know nothing about the Halman 20.
Regarding suitability of the Compac for various trips you mention. Really difficult to responsibly give a straight yes or no answer. Not knowing your skill level and experience I can only say this. To a very large degree it will depend on the captain
. An experienced sailor who plans carefully, sails
conservatively and understands the local weather
conditions is perhaps more critical that the boat itself. Use a boat within it's abilities and limitations and it will be safe.
That being said, around Vancouver Island, sure. To the Columbia
River, depends on conditions at the bar. In strong onshore conditions that bar is one of the most dangerous places on the west coast
and closed to even large boats. Could be guaranteed tragedy for any small boat.
Up the inside passage
? Haven't done that trip but from all my research
it is frequently calm and can require motoring most of the way. If the Compac has an inboard I would consider it. Outboard
powered it would be a long, slow trip.