I have $100k. How should I start?

[Account Closed]

I am a new member here. I've saved around $100k and am evaluating investment options.  I initially considered adding to mutual funds, but I want to diversify, and my wife and I have really enjoyed house-hunting, painting, and fixing up the homes we've had in the past. Also, I am an attorney and my wife works in marketing and social media, so there are several ways we could reduce expenses by doing some legal and advertising work ourselves.

Hypothetically, if I wanted to invest up to $100k in rental property, what are my best options?  Is there a formula to determine the sweet spot(s) on the continuum between using all $100k on one property or using as little as possible to buy multiple properties?

Any other introductory advice is welcome.  Thanks in advance.