Business advice for landlord looking to start mobile food business

[Travis W Condon]

I currently own 2 long term rentals. Closing on a 3rd rental mid February. I've decided to start a side hustle involving wood fire pizzas. I bought a mobile oven trailer that can cater and be a food vendor for various local activities. I've only used Excel and Word for bookkeeping. I'm wondering about Quickbooks or other resources? Which option is best with my rental income plus the family business? The pizza side hustle will ultimately be used to purchase more real estate. I'm looking to save tax dollars, while employing my wife and kids, with best business practices. 

Thanks in advance.