Instead of replacing those, it was suggested to us by a contractor that we just install central air.

I am a full time Air Force Reservist (Not moving anytime soon) with a background in program management.

I have an older but in very good shape 2000sf double wide mobile home. 4bed 2bath central air/heat. 

That way I or my business partner in the LLC can handle the property management for all the properties.By breaking them up, we could always do the property management for him for a fee, but then that would entail being a PM for someone else and taking on whatever additional liability or costs that entails in Maryland.It’s definitely sounds cleaner to break them up.

., former employer 401k) to a solo 401k are not reported on Form 5498, but rather on Form 5500-EZ, but only if the air market value of the solo 401k exceeds $250K as of the end of the plan year (generally 12/31); When funds are rolled over or transferred from an IRA or 401k to a self-directed IRA, the amount deposited into the self-directed IRA is reported on Form 5498 by the receiving self-directed IRA custodian by May of the year following the rollover/transfer.

I don't get the sense that the previous owner actually knew about this as he was a very "hands off" owner of the property and was informed by the house cleaner about the puddle on the floor.

@Carl Fischer  I had looked into opening a self-directed Aire as well in order to invest in real estate… Just have never pulled the trigger 

I'm guessing you have considered this, but one way to get the benefits of rental ownership and still have intermittent access to your property, would be the Air BnB route.

I'd like something that's relatively cost effective, so central air is likely out of the question.Does 3 zones make sense?

We have a warehouse with no access to cool air coming in.