Please share your systems and tips for successfully running a low income investment strategy. Especially around rents, maintenance, evictions, tracking expenses etc.

I recently purchased a few low income properties ...

I'm currently saving right now, but I estimate that in 3 years I will have saved $20K-$25K. I'm 27.I want to make $10K/mo and retire early. What I'm having trouble with is, if I use that $20-25K on real estate, I need...