Wool should not be a base layer, but in the mid-layers. It can be a decent shell in lightning, and felt can hold against light rains (and will stay warm even if it does get soaked.)

Merino wool can be considerably less scratchy than lower-quality wool; alternatively wool blends will also be better (“smart wool”).

As a material, it can be quite hard wearing if it’s made sturdy. That’s less about the material and more about how it’s made.

You might want to consider a shell layer that’s wind proof, but for fall, a light sweater and a shell while active should be enough unless it’s ghastly out. (Cold and rainy. That shit seeps; and nothing wholesome ever seeps.)

Remember the critical thing is to dress in layers so you can adapt.