Yes we are from the Valley!
Harrison West is gorgeous, you have Sunrise Lake, Hale Creek, Doctors Point and Sloquet hot springs, Skookumchuck, its a great run all the way up through Pemberton.
Although I recommend camping up there overnight if you are wanting to hit the hot springs. (I'd say 3.5+ hours from Langley)
A backroads mapbook is the way we started our offroad adventures (we had trackers initially)
If you want to start a run you might get a better response if you sign up on bc4x4.com and post in the suzuki section, lots of locals, we would probably join too
~Candace