That's unfortunately not attainable at the price points available to you. 

Is real estate investing really an attainable and completely possible endgame?

These parameters will help decide what kind of yields you are searching for, which you can use to filter down your list of macro markets.Then I would start by looking at the macro market's fundamentals, that is the population, job and income growth over time.After that, I would look to see what the rents and home prices are and how those are trending as well.I would do a similar analysis, but at the sub-market level for the metro area you are considering investing in.Other metrics that I find valuable to understand are household income, poverty, unemployment, and educational attainment.

While certainly achievable, there are complex rules that have to be strategically navigated to achieve that result - often attainable, but not always. 

Their credit score is 770 with ample collateral (10 properties owned free and clear).

A good goal has to be SMART (specific, measureable, attainable, relevant and time-bound).

.), having ample reserves (6 months-1 year), etc.

I have ample cash reserves to cushion any (most?)

These are my goals and I feel all are realistic and attainable this year.

you will attain better returns, with less risk.you are young, with time on your side.