If the terrain is steep, I would strongly suggest an angle compensating range finder. I didn't have one on my high country mulie hunt and on the first day in camp I went out with a buddy's and compared it to mine. I found some range readings differing by 10 plus yards depending on the steepness. I have now made the purchase.
I would also look at synthetic fabric clothing and avoid cotton. They are more breathable and air out easier. Make sure they are soft for stalks. Some heavy wool socks or stalking slippers of some kind will help when you close the distance.
If you will be glassing much get some good optics. A good spotting scope, tripod, and binos are required equipment. You will likely spent much more time looking through glass than actually stalking. Cheap price is cheap quality and if you plan do it more than once, spend some money.
Daily practice at 70 yards will make a 40 yard shot seem easy! (or so I found)
Good luck!:way: