Hi Beardrum, Haven't been there, yet, but just spent 3 months and 12,700 km on a road trip to Inuvik, Northwest Territories where half our time was on roads like these, and worse!. Towing my 13 ft. Trillium
with my 2006 Toyota Tacoma - 4WD 4cyl. without any major issues.
Weather can change things as we had to abandon one gravel road side-trip due to the road conditions after a day of heavy rain which can happen any time of the year in B.C.
The issues we encountered: broken front windshield on truck; loss of spare tire from back of the trailer after 45 miles of the worst washboard I've ever seen in 50 plus years of driving. It broke the welded post, chain and lock and disappeared somewhere; the rivets on the gravel guard on the trailer window loosened up considerably from all the rattling; holes in fiberglass on trailer front from spitting rocks - good mudflaps on the truck, but.... Some sort of solid protection needed as I had sprayed 3 coats of that rubberized rocker panel stuff on the lower half of the trailer before we left, but it didn't help. Well maybe it did. We might have had the holes sooner otherwise!
Preventive things we did before the trip:
- new tires
for both truck & trailer(10 ply Rotiva AT Plus & 8 ply Marathons)
- 2 extra spare tires
- replace hoses,belts, filters, fluids, plugs, thermostat
- headlight covers - heavy duty clear adhesive vinyl
- R & R all windows
and resealed with ProFlex, not silicone!
- towing mirrors - that got loose, so took zap straps to anchor
- tow strap - 20 ft. 5000 lbs.
- 12V tire inflation compressor
- water bandit - for taps without threads, or threads that didn't work
tabletop lamps - no drain on batteries.
- hitch receiver lock and hitch pin lock
- air horn and bear spray
Of course because we had done all this we ended up not having any operational issues on the whole trip. I'd heard that the gravel on the Dempster Hwy. was shale and really good at slicing tires
hence the 10 ply. Speed is factor on those roads too.
Climbing hills like the one on the Freedom Hwy. was a slow process with a 4 cyl. but it was quite comfortable, especially since my vehicle is a manual transmission. I like the engine braking effect coming downhill too since I don't have brakes
on my trailer yet.
It's a bit wearing driving for a long time on those types of roads where there are blind corners, dust, fog, road hazards, etc. so we took plenty of breaks to enjoy the scenery. Some roads we went on were single lane with just two muddy ruts. On those, I drove slowly "off centre" to keep the trailer from getting high centred. That an using the 4WD - either 4 high or 4 low depending on the circumstances.
I feel you can go anywhere as long as you use commons sense and go slow when needed. The "Hill" should be quite feasible. We only dropped the trailer and did a day trip on gravel without it once because we couldn't get it on the ferry across the Mackenzie River due to the dirt banks and low clearance.
Any questions, feel free to ask. Still working on my photos from the trip!