First, are you looking to buy a single family residence or another type of property? 

Far too many parks just 'give' a resident in the park free space rent to keep an eye on things and do light maintenance with no 1099 reporting. 

(Starbucks / yoga studio / craft brewery /boutique cookie,coffe or ice cream shop  are the easiest targets)-Activation of dormant retail sites-Increased foot traffic For B to AAbove also apply-Home valuations (are homes in the increasing at rates above nearby or similar neighborhoods)-Is it walkable or are projects in place to make it highly walkable for residents-Is it near highly desirable activity centers -is it unique (for example - Can it get historic designation)

I completely agree with @Ashish Acharya's points about the cost-effectiveness of a HELOC and the potential credit implications if it’s secured by your primary residence.

Are you/your partner(s) foreign nationals or non-permanent resident aliens?

Honestly, Tampa checks all the boxes for cash flow, appreciation, and long-term growth, so let me know if you need more specifics or help with a plan!

The last thing I would do is aggressively pay off my personal residence, especially if you have a low % mortgage.

That's a residents approach, not an investors. 

You could do something like what you want if it was your personal primary residence and even then the interest rate would be ugly. 

Do honest math on a purchase and you'll see.The benefits of real estate are... all of them together.