There's only about 2 types of work permit I know: closed  vs opened work permit: where the former has a condition of which employer the holder of the permit can work for (it's specified on the document); while the latter does not have that condition; hence, the holder of the open work permit can lawfully work for any employer.

It is legal and very lucrative in some parts of the US. 

Most of the PM work is done on the first 3 months of the management, then we can recoup our expenses. 2. this Is legally required.

Purchasing the LLC gives you ownership of the property, but it also opens you up to additional legal exposure since the entity has been active, and there is no way to really know for sure what else they used the LLC for.

Is it a reputable company and will the documentation provided from the study hold up in an audit?

I know the process from beginning to end and documented this thoroughly.

Yea, the guide is a living document that I've updated several times throughout the years.

Hello Doug, I am not a real estate attorney nor is this legal advice.Unless someone's state has specific laws banning contract assignments you should be fine doing the following.  

Not sure if that is still legal or even translates in today's world of everything online but seemed like a good screening tool to me at the time. 

You can often get better rates with a national lender, but the customer service is non-existent, communication probably sucks, they may ask for the same documents multiple times, etc.