Had we not hired an AC mechanic to come look at the crack in the ceiling we would have probably had carbon monoxide poisoning.

Next is about 5 tenants living in different older motor homes parked in the back yard with a gate they access for in and out (kinda like a make shift free mobile home park!

A Broker is not a wholesaler and many times do not fully understand all of the mechanics. 

I know mobile homes will depreciate over time unlike stick built houses but there are people that invest in mobile home parks (Brandon Turner) and have been successful.

You may wish to confirm that the new 401k provider has experience with the particular investments in which you intend to invest your retirement funds as you very likely will have questions in terms of the mechanics (e.g. how do you invest in real estate, etc.).3.

Since the house needs additional work, I'm researching the idea of maybe knocking down the existing structure and putting an already updated mobile home in it's place (assuming that the city would allow for this). 

I've also heard the house's mechanicals are a factor in this, but I am not sure how. 

Purchasing a mobile home park with units also and currently have no lease agreement with tenants.

I m still new to rei, but I have a motivated seller whose wanting to sell his mobile home, he only has 5000 left to pay on it.

However, there are no balance mechanism to hold it up - the sash slides freely in the frame.