Well if you want access to Libby during your hunt I would suggest dropping in from St Regis up the Little Joe road.
Those were the first areas I ever elk hunted as a kid, Fly creek area and the Gold creek area.
From there its a short drive over Little Joe road and to St Regis, then you just scoot up to Libby to do your business there.
Be warned though, it can snow alot up there in October so I highly suggest four wheel drive, shovels and tire chains. If you get snowed in and cant make it back over the pass you have to drive down the St Joe river road through Avery to St Maries, up to I90 and back to MT. But I will add that this happening is rare.
Once you cross over into Idaho just find a suitable place for your camper and start from there, virtually all that area has or had elk in it, same rules apply as other areas in the panhandle, get away from the people and roads, look for fresh sign and be perstistant.
+1 for getting wolf tags, I think I saw you can have two this year, or at least they are working it and from what I saw they plan on allowing electronic calls too. I was in the Line creek camp just down the road from Red Ives 7 or 8 years ago and saw a wolf up on the mountain across the river, the mules actually saw him first.
Im a little skeptical of the 30/30 lever gun being so popular, Ive seen a couple over the decades but not many. Its been my experience that the 338 win mag tends to be the default Idaho cartridge if there is such a thing, followed very closely by the 30-06 and 300 win mag.
Canyon shooting has become somewhat popular, using the 50 bmg to start out but IDF&G put a weight limit on rifles and no one wanted to shoot a 15 lb 50 bmg.
I think it was the 338/378 that became popular after that. There are others now but I havent followed it very closely to comment on it.
A word on canyon shooting here, the crosswinds can be very very wicked and unless you practice it alot and are proficient at it, avoid it.
Glass is an excellent idea, yes the brush is thick and hairy but it allows you see through the brush as another poster suggested. I use the little light weight Leica's, they are perfect for this.
Have good rain gear as it rains alot, all those areas are pretty much a rain forest come october and you can expect snow as well.
Take good topo maps with you of the entire area you expect to hunt, a GPS is an exellent idea also. Once you learn how to read them, maps can help you find likely places where elk are hiding.