But I also have questions to see if anyone thinks this is a solid deal and what they expect to see as appreciation with these manufactured homes on land not in a park.

It is also important to keep realistic expectations. 

I expect that I'll be reserving time in various resorts and farming those weeks out to perspective vacationers, does anyone know if VRBO, or AirBnB, or some other site would be most appropriate for this approach?

I expect it to be similar to real estate farming.  

Negative $455/Month and at that price/rent point, poor historical rent growth and appreciation.What is the expected source of return?  

I don't expect to be a millionaire overnight.

You should make sure that in the worst case scenario (no rooms rented out), that you will be able to afford the mortgage.Even though it's unlikely all the rooms will be vacant, its equally unlikely that all rooms will be rented out for a long time, room renters tend to move around a lot so you still want to make sure you're prepared for the vacancy, as Koren mentioned above expect leases under 12 months.  

I expect this will be the first year I haven't bought anything since the early 2010s.

I do realize that doesn't make me a know it all investor as even if I overpaid by 20%+++ in 2014, the REI market would have still treated me kindly.Anyways, I am wondering what your opinions are for getting into REI through Flipping in ATX for 2025 and beyond given the many forces that are at play in ATX including: 1- Interest rate cuts and the expectation that cuts will be a trend in 20252- Even with Interest Rate cuts, will this be enough to get people moving since they may be reluctant to move when they have 3% interest rates on their current home? 

Quote from @Ronnice T.: I've been using the MileIQ app for several years.