I just got the nod from our financial advisor, and....

Congrats! That's a nice spot to be in. I retired (mostly) at 59 but found a pretty good part-time gig for the next 9 years that was a big help financially, and kept me busy a few days a week. It made a big difference paying for my insurance which was ridiculously expensive till I hit 65. Take a look around, you might be able to find something for a few years that would bridge the gap till Medicare kicks in. Working at a job because you want to beats the hell out of working at a job because you have to.
Congrats on the P/T gig. Reading literature on retirement mistakes. One the of higher mistakes is. "I'll just pickup a P/T job?" Its not a easy as one thinks that fits schedules. Not only retiree, but the employer. So if one has a solid P/T option? That is a big consideration.