Also maybe turning it into a two family home to maximize rental income is an idea.  

Right now the rental income covers most costs and I’m going to be paying 600 a month of my own money. 

I think you may have very well narrowed down my strategy choices down to one of three; the BRRRR method (although this might be too much to start with for a newbie), the live-in flip that you mentioned (probably the most practical as I've been part of many different projects in the construction industry), and a combination of house-hacking/live-in flip (probably the most rewarding with a potential to swap between units as I finish one in order to bring better rental income).

Diversity the way your income is taxed. 

Following is the income for all the unitsRentsNew Rents Expenses Unit 1: 1800 sqft $ 975.00 $ 1600Insurance $ 6,000.00 Unit 2: 1100 sqft $ 900.00 $ 1100Taxes $ 2,728.00 Unit 3:  1100 sqft $ 925.00 $ 1050Sewer Charges $ 4,800.00 Unit 4(Apartment): 700 sqft $ 700.00 $ 850Vacancy $ 4,000.00 Total $ 3,600.00 $ 4,600.00 Repairs $ 2,000.00 Yearly Revenue $ 43,200.00 $ 55,200.00 Total $ 19,528.00 Mortgage Interest Only/m$1,460.00$1,460.00Mortgage Interest Only/y$17,520.00$17,520.00Current Income Projected Income Net Operating In $ 23,672.00 $ 35,672.00 Cap Rate4.30%6.49%Cash Flow With Int Only $ 6,152.00 $ 18,152.00 Cash invested $200,000.00$200,000.00COC3.08%9.08%What are your thoughts on this deal?

House hacking is for sure the best way to get into real estate investing (in my humble opinion)If you combining your incomes puts you where you want to be, I'd do that.

I was considering being an agent because it would put me in the community, while potentially honing my skills and relationships while earning a solid income to invest pending my results.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with zero or negative relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560, little to no good tradelines, lots of collections & chargeoffs, recent evictions.

While I am not an accountant, and you should speak to yours about this, there is a loophole in the tax code called the STR Loophole which allows your STR (provided you are not using a PM) to be counted as active income/active expense so that the costs, payments, depreciation etc. goes against your active W-2 income.

My question:If I were to seller finance and then raise private capital for the rehab, how would I pay back the lender loan other than chewing through income from the rentals since I would already be paying the seller on the finance?