You will sweat on a hard hike up the mountain, I tend to dress very light in the mornings when I know I'm hitting a hill, I'm cold at the start but after a short while I get comfortable. If I know its a hill or hike that no doubt I'll be sweating hard, I'll pack another shirt with me, when I get to the highest point, I'll wait till I stop sweating then throw on the new shirt. But as far as new clothing, I know it's expensive but kuiu has some really nice gear, their undergarments have improved I think and match that of firstlite. The wool blend shirts and socks will take a lot of sweat without stinking, I've hiked days and miles in kuiu or firstlite socks and they just never stink. Laying up is the only way to go, but good quality clothing tops it off. Staying dry in a heavy rain, that's a tall order, I try to find a place to sit under good cover, or just know you'll be wet but good clothes will keep you warm and keep the wind off you. I would stay away from firstlite rain gear systems, I've had them fall apart on me. the Kuiu system has been great but not cheap, maybe buy one piece at a time for rain gear, the Yukon is my go to rain gear, add the pant later and you'll be pretty protected.