If you’re gonna stick to riding the XC stuff then just ride with what you’d normally ride with.
Bigger brakes won’t hurt.
Bigger tyres won’t hurt if you’re gonna use the lifts most of the time.
Pads not necessary but may help your confidence.
if you normally ride with SPDs then stick to them.
Basically you’ve got to weigh up the added weight of alpifying your bike vs the cost of any climbing you’re going to do.
Most of us out here that ride big days with lifts AND go off and do 1000m climbs and the long descents have one bike that does it all – Nomad / Alpine 5 / Patriot / Heckler type bike with 160 forks – weighing in around 30-35lbs. Seems little point in having a light weight bike to skitter down the mountains. No need for a full face helmet unless you’re downhilling. Pads are optional.