Buying a Primary Resident would you put 15% down or 20% down?

[John Smith]

I want to buy another Primary resident this year in 2020.  Which Scenario would you pick if you had ~125k Cash? Potentially I would live in the primary resident for at least 3-5 years. 

A)  Buy $500k house, 15% down payment $75,000, PMI for 37 months $177/month

Mortgage with taxes and insurance: $2,600/Month

Potential Rent in the Area: $2,600/Month

Use the $50,000 remaining to down payment on another investment property ($250k) ~Nov 2020 

B) Buy $500k house, 20% down payment ($100,000) 

Mortgage with taxes and insurance: $2,300/Month

Potential Rent in the Area: $2,600/Month

Save $25k this year and $25k next year, down payment on another Investment Property (250k) ~Nov 2021

C) ?