*Have a USP right of the bat to convert leads*Have a huge/constant flow of leads from investors, sellers, partners, etc.If I was doing it for houses, I'd do the same thing, just work on the leads.

you are right on both counts - it is saturated and there is tremendous demand within all asset classes / niches, AND real estate is constantly changing hands and there are still deals out there. 

Is there an app that can streamline this process by synchronizing updates across all these platforms, thus alleviating the need for constant manual updates?

People are constantly trying to help each other and help with referrals, help with Deal flow, recommendations, partnerships, you name it! 

Zoho Campaigns, this is to send out emails similar to Constant Contact.

Given your experience with RV parks and MHPs, you already have a strong foundation for managing mixed-income streams, which will be valuable here. 

They couldn't get a construction loan and were constantly blaming the cities being tough on their permit process.

There is a lot of turnover with Sailors constantly PCSing in and out of the area.

We are in the top 10 fastest growing big cities right now, so families and singles are constantly flying in to check out the area.Raleigh allows short term rentals if you apply for a license.

Have also used list source and prop stream before but the data they provide is very similar to what I pull off the tax records through CRS Tax.