1. Determine what the end goal is first. What do you and your wife want most, cashflow, appreciation, high returns with headache tenants, lower returns with tenants who almost never call you, the speed of retirement, etc.
2. After you determine what you want, either buy 2-3 books around it, buy a course/hire coach, and or watch a few youtube videos on that topic.
***3. Contact Matt Faircloth. He wrote the book "Raising Private Capital" which is published by biggerpockets. He is not far from you. You can lend him your money and basically get paid to learn from him. Since you would be lending him money, he would answer all questions you have + you get a hands on, first hand look into what a multimillionaire full time investor does regularly.****
Personally, I would invest into nicer single family homes in B+ areas with expanding populations and close proximity to grocery stores and 5+ (5 on a scale from 1-10) school, looking for cash on cash returns of at least 8%. Those areas are primed for consistent appreciation (typically 3% per year in Atlanta, GA) AND the tenants are less of a headache. ***I would contact 5 agents and have each one make 2 offers 30k below list price per week for houses on the MLS. I do this now, but I make, on average, 50 offers per months (works excellent!).*** I would not buy any of these houses cash - i would use loans (from small local banks and credit unions bc they will finance all of your properties, most likely) and partners. I'm 26 with zero responsibilities to add context as to why I would invest 450k like this.