Do I need 457(b) to live comfortably if already have IRA, pension, SS?

I’m 29 years old single no kids - this won’t change except for my age. Monthly income gross \~8900, net \~5600. Expenses \~3500-4000. Income projected to increase 3% yearly. Live in HCLA. I have a Roth IRA that I max out every year. Currently at 50k with 65% of my portfolio is VOO. I have a HYSA with 50k in it. Growing up in an unstable environment, I don’t plan to decrease this number because it gives me a piece of mind, please don’t convince me otherwise. Extra money also goes here to fund my international trips. I have a government pension that takes out about 7.5-8% of the gross income monthly. 100% healthcare vesting after 25 years. I’ve been working here for almost 4 years and planning to stay here until I retire. I thought about being FIRE around 50 so recently started a traditional 457(b) with Schwab but unsure how much to contribute monthly and what to invest to maximize tax advantages. If I plan to work until 62 do I even need 457(b) considering I already have an Roth IRA, pension, Social Security?