@J Newman
While the 1031 exchange does exist, its not always your best option in all cases. Reference my post here of a real life example where its not, at least in my opinion as I laid it out. Its a different case than yours: https://www.biggerpockets.com/forums/48/topics/1169308-equity-rich-need-advice?highlight_post=6659747&page=1#p6659747
If you have commercial property for over 40years, I know the depreciation rules were different back then. But, i'm guessing its still approx the 39year depreciation schedule. So, they are probably fully depreciated. However, take a look at your father's tax return and see how much PAL (Passive Activity Loss) may be built up. When you sell, these carryovered losses help to offset your tax liability.
I've been a landlord for over 20years and I am liquidating my portfolio to more passive and liquid investments. However, I have been paying very little tax mainly because of the PAL.
I guess I'm not sure "how" you are trying to achieve your goals. My particular issue with being FULLY invested in real estate is you still can't pay a bill with Title to a property. Its a very illiquid asset. Doing a 1031 only just moves your equity in real estate around with deferred tax liability.
You have competing requirements. To have increased cashflow to live on, you should have little to no leverage. To build generational wealth, you should be max or lots of leverage -- however, you'd have little cashflow to live on.
you mention something about nearby investors having some situation. That might be a good reason to move your portfolio. My primary issue at this time is the lack of inventory and the 1031 timelines makes it difficult.
Some might say to 1031 into DST's or OZ funds, but there are so many arguments for and against, especially since some have restricting or stopping their distributions lately I've heard. Honestly, they aren't for me so I have done one.
I think to start, you need to layout a sort of budget (if you haven't already --- this is as public board so we don't need to know). One bucket of cash flowing properties, and another bucket to continue scaling/growing for generational wealth.
Be sure to keep everything in his name to take advantage of the step up in basis when the time comes. Perhaps look into some estate planning... I believe trusts can be helpful to transfer the deeds without probate. With 60 doors, not sure how many Titles you have, but that could become a pain to transfer via probate, AND don't forget that probate is public.
Well, hope this helps. Happy to chat. Good luck.