Rental property help

[Carson Kesner]

Recently purchased a $70k 1100sf SFH as a rental property, planned on renting it out @ 950/month with a $530 mortgage. Refinance property#1 in a few years after improvements and save Income to purchase another SFH and repeat until I can make a down payment on a commercial property. Am I being naive or ignorant in assuming I can make money within the next 6 years? Or even make money to create a down25%down payment on a commercial property with 200k? I run a landscaping company and was looking for a passive income type deal.. any input welcome