Stacking method to grow exponentially

[Cam Cummins]

Hi BPs, I bought my primary res in Nov 2010 for $125k, I came to closing with  $31,744.99. Zillow says it's value is around 200k. I still owe $83k with mtg of 480$. No escrow. I moved into my now husband's property and rented out my home. Getting the house rent ready has costed $15k masterbath remodel and $7k for new roof. Tenant pays 1350/month until oct 2019. PM fee is 10% monthly Yearly: Insurance 1400 Taxes 1100 Hoa 820 Ive been looking for deals in FL but nothing meets Brrrr with 70% rule. Nor turnkeys for 1-2% rule to buy and rent. I have cash and credit. Looking for mentors. Advice pls. Goal: own 15-20 properties. Interested in midwest market (in,mi,mo,oh) and texas. I like sfh and can look to mf as an option. I like rent to own/lease options for some properties once I grow. I have my primary/rental property. Should i use cash out refi to put down on 2 properties or more? Should I get a $40k loan from my 401k? If i wait til 2020, then I can get a 401k loan out for max $50k. Thats a year for an extra 10k. Is it doable to squeeze min 2 properties from cash out refi and 2 properties from 401k loan? What are your thoughts? TIA!