I've ridden a similar distance and I've actively given up on ever using bike lanes except for lanes that I specifically know are properly laid out and maintained, or a handful of places that do decent lanes (the Netherlands, London post-2010). It's just far too common for a bike lane to end up being a trap, and you have no way of knowing it's going to dump you into a blind corner / high kerb / unavoidable debris / muddy field / ... until it's too late. I agree with doing what seems safest, but you simply can't trust an unknown bike lane, so using one is just too high risk.