I want to spend a couple months in BC (outside of Vancouver), where should I spend at least a few weeks?

A doodler and computerer. I like permissive/permissionless open source, smart contracts, p2p systems, room-scale VR, and NixOS.

shazow.net

Currently: WhatsABI

If you want, you can get to pretty wild places fairly easily. Kayaking in remote areas up the georgia strait, rainforests everywhere, hiking/camping in mountains within a few hours of Vancouver, etc.

Always wanted to visit Haida Gwaii - requires some planning.

Kelowna is am easy & beautiful wine region.

You pick. :) Probably shoulder season (fall/spring).