You can’t hunt uphill in the dark timber. The bulls bed on small benches where they can look down.
The best slope face to hunt can vary. In archery season they tend to be north facing, but any slope with water, and thus thick, is a good start. Look for access points to steep terrain such as benches or saddles. For later seasons they may be more towards south facing slopes where the grass stays edible longer.
Winds can be tricky in steep terrain but if you understand the daily change from cooling air falling before sunrise to warm air rising, and then the prevailing winds, you’ll likely be fine. When/if those transitions occur is anyone’s guess.
I find random cow calls seem to mask any noise you make (other than talking of course). Elk are loud don’t worry about noise, just no human noise.