First-time Investor-What systems are a must?

[John Jones]

My fiance and I are looking to purchase 3-5 rental properties. We are looking in the Tulsa and OKC market and will be doing the property management ourselves. What systems and apps are a must for a newbie investor? What task should we outsource? What team do we need to have in place to ensure we are sitting on a beach sipping a Pacifico by age 35 (jk, kind of)? Thanks in advance!