Seeking advise on best strategy to finance real estate business

[Scott Champion]

Looking for some advice on financing future real estate (buy and hold) business. I am a full time police officer set to retire in 2.5 years. I bought and completely renovated a rental house in 2019 and I was a great experience. I would love to buy and fix more houses in my retirement.

I currently own my primary house free and clear worth approximately $325,000.00 and I own the one rental property worth approximately $100,000.00 and I owe $20,000.00 on this house. My current credit score is considered excellent at 826.

I guess my question is should I do a HELOC loan? Or is there better options out there to continue my real estate goals.