Anything where you are reselling property within one year falls under the same tax bracket and has similar liability concerns, so I personally do them under the same entity.

I plan to rehab and resell but may hold on to it as a rental depending on what I find out from my banker - my bank is hinting at future rules not allowing me to use my collected rent against income anymore unless I have had that property on my last 2 years tax returns.

Its like they are jealous or something, dont want to help no matter how polite and outgoing I am...Or they suck them up themselves repair and resell...This is ALOT harder than Lonnie says!

However, a low-occupancy park of this size could be a great turnaround project to resell to an institutional investor...My gut says 50 - 100 spaces is the "sweet spot" but am I wrong?

The broker suggested I buy something and resell to them on a contract collecting a spread on the interest.

Are you planning on building a property to hold and rent or a house to resell?

Some companies have tried to make a business out of buying these lower value assets and reselling them to street level investors.  

Owner left a microwave, kitchen table, and washer dryer.I am turning around and renting it or reselling it on a lease to own basis.

From there, you will want to make a plan on how you will proceed (i.e. resell, rent, etc).

You are not required to hold forever but if your intent in buying a property is primarily to resell it then you may not 1031 it.