I am considering a change that includes paying off my home with the sale of some stock ($85k). If I prepay taxes of ~30%, is there anything else I need to consider?

I’m considering leaving a toxic job and moving to a new career.  My financial advisor is fine with the change, but suggested I ask about tax implications. It seems like as long as I plan for 20-30% in capital gains, there isn’t much else… or am I missing something?