No experience BRRRRing .....own a property free and clear

[Miguel Cardoso]

So I own this property free and clear in the Miami area...not the greatest neighborhood ....property estimate based on an average from Zillow, Realtor, Redfin, Homes and Remax is $400k....the lowest estimate was $377K on Zillow...anyhow I haven't spent an money to improve the property since I purchased it.... the renters really are not the tidiest folks ...grass usually needs a cut ....etc...I wanted to BRRRR this propert to acquire another property. I want the max payout. Questions...

1. Should I hire a property appraiser to see where the value is? 

2. Will this pro provide information on what I need to improve to get the most from a bank?

3. What are the best finance options in Florida or nationally to BRRRR?

Thanks in advance for all input.