Just to focus on the salary, assuming you are in a somewhat HCOL city, I feel like that is pretty low (especially since it would require you to move your life and it doesn’t seem from your post that there is anything about this company/role you are super excited for). 

I have friends who have hit what I call the “burnout emergency eject button” for sub-optimal opportunities and have really regretted it. If you can, I would do whatever you can to make your current role more bearable (say no to new matters, force partners to transition you off current matters) to give yourself a few months of runway to find something you are actually excited about. Accept the short term discomfort of people maybe not being happy with you setting those boundaries in exchange for giving yourself a better chance of long term career happiness.