Danny, Welcome to the Bigger Pockets and what seems to be your first steps in the REI.
First to address your question, Yes its a good start to use a primary loan to lock in the best interest rates and lowest down payments then later turn it into a rental. It is also wise to keep some cash back for repairs and other costs that come with owning a home.
I would suggest you look at this as a math problem if you plan on this house being an investment. There are plenty of mortgage calculators out there that can estimate your P&I payment. Then you will need to add in tax and insurance, tax can be looked up and insurance is fairy easy to estimate. From there since you are putting less than 20% down you need to add in PMI. That will give you your monthly costs at current state. You can add in vacancy, maintenance and property management to see your full burdened cost once you turn it into a rental. I would as yourself two questions, first does the cost of the property burden your saving and investing goals while you live in it? Second does the area support rents that make sense to eventually rent it out to your standards? I myself invest in cashflow but if you are banking on just appreciation then as long as those carrying costs are not too much and you feel confident that the properties are in the path of growth, go for it. Another opportunity is get roommates and house hack that way.
Best,
Mitch