I've been up there a few times, most recently in April of this year. Getting to Kwoeik Creek is no problem, just cross at Boston Bar and follow the FSR north. We've never encountered any issues passing through the private land/first nations land.
Once on Kwoeik, the road is in great shape til the headpond of the hydro project. After that, the road is still in great shape it's just very bushy. If you don't mind a few scratches (ok, many scratches) you can drive all the way to the trailhead. There is a sign that looks like this: https://www.flickr.com/gp/[email protected]/mMq2gf
We explored a short ways on the trail, to the lowest lake. I believe that trail will take you all the way to the alpine, although I can't attest to the condition of the trail beyond the first lake.
When are you planning on heading in there?