taxes will also depend on your other income.
do you need the money?
if not, why don't you see if your former employer will do a direct rollover into an IRA you establish. you avoid income taxes and penalties. if it wont, you still have the option of putting the $ you get into an IRA, though you would have to make up any withholding to completely avoid taxes and penalties. if you can't make up the difference you would only be taxed on the amount not rolled over + the 10% penalty.
I certainly know it’s not my best option for the maximum value, just curious roughly what I might end up with.
Household income with my wife should be in the $125,000 range.
if when the taxable portion is added to your other income the total doesn't exceed $168,000, 22% in taxes between 168k and 321k 24% + the 10% penalties and as i said there may be state income taxes.
put another way you'll end up with about 66% to 68%, but even less if state taxes apply.
since I know nothing about your actual tax situation, this should only be use as a rough guide
you could try TT taxcaster, some items are based on 2018, but this might still give you a better estimate
Assuming that this a a qualified pension, the plan is required to provide you with a statement describing your rollover options unless you waive that obligation. Among the options are to take a distribution, subject to tax and early-distribution penalty on the taxable amount (the entire amount unless you have made after-tax payments into the pension plan), roll the money over to another retirement account like a traditional IRA (nontaxable) or a Roth IRA (taxable, but not subject to an early-distribution penalty), or some combination of keeping some and rolling over some.
Choosing not to roll the money over and paying the early-distribution penalty is usually not the best long-term financial decision.