Combining a cash-snowball with buy&hold is the dream team!

These are the universal elements and actually might not be a bad place to start.

Approx 5 commercial  properties with total combined value book value 12m .. actual maybe 20-25m?

I will take that over 200.00 a month positive cash flow :)  All the while running my Capital Partner business and funding over 120 deals a year for my hand picked clients. lThat's a nice combination.

What I have seen is an internal sales team (AE's/Reps who split their time between referral partner development and managing their pipeline) combined with someone solely responsible for digital marketing (social media, SEO, ppc).

Just don't combine old and class D unless you have a very good reason. 

We both work in finance, so we’re pretty comfortable running the numbers.Our combined W2 income is ~$350K, and I work remotely with a very flexible schedule.We’ve saved over $200K across various assets (stocks, crypto, cash), and we live frugally, saving around $100K a year after taxes.

They are either a combination of a Maintenance/Tenant Management business or Accounting/Real Estate sales/Tenant management service. 

My initial goal was to earn $100,000 per year, and with our combined efforts, we now make approximately $16,000 per month.

Quote from @Dan Grove: Some combination of cash to seller, closing costs, repairs, construction, paying off arrears, assignment fees, commissions.