Welcome, Mike 517.
Sorry about the job, but I agree with DW that you probably have the option to pull the plug now if your are ready.
#1 piece of advice: if you're going through a layoff, it's an emotional time. (Search on "Ralph", for a recent example.) Other than signing up for COBRA health insurance continuation and unemployment benefits if you are eligible, there's very little that has to be decided in a matter of days (or even weeks).
#2 - You didn't specifically mention whether health care insurance is one of the expenses included in your $42,000 per year spending target. You'll want a solid plan for bridging the years until you are eligible for Medicare.
#3 - Keep working with Firecalc and other online calculators to get really comfortable with your numbers. As you do, add more complexity regarding what-if's for inflation, taxes, market returns, unforeseen expenses, etc
#4 - I agree that you should be looking at some cleanup and consolidation in your portfolio. It would appear you've drifted past "diversified" toward "jumbled". (Happens to many of us - I've spent the past few weeks working on the same thing.)
# 5 - Vanguard and Fidelity are two firms that offer relatively low costs and very little hype to self-directed investors, for both mutual funds and brokerage accounts.
#6 - I see you live in Idaho. Really
check your seat cushions closely if you bought a lottery ticket last Tuesday, but somehow misplaced it.