Some resources: The 16% SolutionPaper ProfitsBiggerPockets Podcast 056: Syndicating Deals, Investing without Tenants, and Tax Liens with Ankit DuggalBiggerPockets Podcast 211: Investing in Out-of-State Rentals and Notes with Bob MaleckiBiggerPockets Podcast 028: Note Investing and Raising Private Money with Dave Van HornBiggerPockets Podcast 273: An Introduction to Passive Income Through Real Estate Note Investing with Dave Van Horn

I would like to avoid utilizing the equity in my house and to buy properties either using capital stacking, private lenders, and/or seller financing.  

Your income is adequate for this price range, but remember that mortgage approval also depends on your credit score, debt-to-income ratio, and other financial commitments.With a $20,000 down payment, you'll be putting down less than 5% of the home's value, which may require you to pay for private mortgage insurance (PMI) until you've reached 20% equity.

I am leaning more towards MTR route (FF) as that is how I found my tenants (medical professionals) in the main house and I don't mind cold calling leads as I kind of enjoy that part.

It's a great way to connect with fellow investors and professionals in the area.

These 50% and 1% "rules" are more like guidelines, and sure more experienced/professional investors like you may use them as hard rules but that doesn't mean everyone should. 

Currently on private water/sewer but public is available.

A lot of young people here, working professionals, and college kids.

Flips aren't investment, they are considered inventory by the irs.If you have enough deal flow, then leverage probably with hard money or private money loans. 

Be sure to have experienced tax professional help you understand the tax implications.