Additionally, it can help maximize renovations and improvements.20% of the total depreciable basis was classified as 5-year class life.

Something to consider depending on your risk profile. 

Even with a lower prime rate, the affordability boost is limited if home prices remain elevated and rents don’t increase proportionally.For investors, this might be the time to get creative: value-add strategies, BRRRR, or exploring underserved markets where rents still have room to grow might help improve cash flow potential.

Personally, I would put most of it in passive real estate syndications - but I am a full time passive investor so that makes the most sense for me.The first decision you would need to make from my perspective is whether you want to invest passively or actively (your profile says rental property investor, so I would assume you are currently an active investor). 

Another option depending on where you invest is to use the AirDNA profile and a lender will underwrite if the occupancy rate is high enough.

Put all your cash flow into improving your existing rentals or buying more.

Each renter profile comes with its own booking patterns and renewal needs, as you mentioned... but we find that a 30day rental period with option to renew and automated reminders to the renter works great!

Thank you You are obviously a sincere young person looking at improving your financial position.  

One of the reasons most developments have Mello Roos is that cost to put in all the public improvements are so high that it will stymie growth if the developers have to front it all.

It depends on the neighborhood and maybe even what improvements that hypothetical home built in the 1970s got.