As you can see from the routing, there are several ways to travel to and from Vancouver Island. When getting a ferry pass, mention the circle route and you get a special rate. You have a week to make the circle with the special rate. There is plenty of excellent accommodation to be experienced from regular hotels to B&Bs.
This was a logging road only a year ago that been upgraded with paving recently. There were still a few miles of dirt (good condition) but lots of twistees. Stop at the big tree rest stop to see a collosal tree! Road occasionally narrows to a lane and a half. Watch for occasional logging trucks in these sections as there will not be much room left. Starts cold on the coast and warms up quickly as you get closer to Cowichan. No fuel along the way (no nothing along the way actually) but fuel, pubs and restaurants in Lake Cowichan. Make a great loop ride from Victoria to Sooke to Renfrew to Lake Cowichan to Duncan and back to Victoria.
This is really a mixed bag, but all of it great in one way or another. Landed in Bella Coola by taking the ferry from Port Hardy on northern Vancouver Island (about $250 for an overnight 20 hour trip). Bella Coola is a tidy First Nations town. Nice pavement up to The Hill. This switchback gravel road is quite an easy climb, not nearly as hairy as I had been lead to believe. Easy on a bike but wouldn want to try it in an SUV towing a trailer! Some spots down to one lane...watch for trucks coming down the hill...they don /can stop. Once up the hill it is still dirt road but in such good shape that it may as well be paved, but it was dry while I was there. Could be slippery when wet! about 40K of dirt and then the rest was paved with good surface. Mostly wide open cruising, sweeping corners, no traffic (and few gas stations). Watch for wildlife (bears, deer, moose) on roads. Great distance ride. Incredible scenery. Wide open high plains country. Great campsites and home cooking stops at the main spots. Geat ride!