You should consult a lawyer about this one.It's suspicious that they want to pay so much (up front).

Does anyone rent to immigrants/ permanant residents?

I've seen some state specific forms online for around $75....I'm tempted to get those, customize for my situation, and then have a lawyer review.  

I would suggest enlisting the services of a real estate lawyer.

When I was in that position my lawyer added a contingency that we needed a letter from the tenant stating that there was nothing owed to them that was not in the lease and more importantly nothing that needed fixing.It helped because the tenant had a few minor items to fix (which I took care of on day one) but it let me know that they were happy tenants and if anyone would know about a furnace/leak/roof issue they would be happy to spill it.

We have sought the guidance of a real estate lawyer but I wanted to get some feedback from investors who have or are currently investing with a group.

Honestly if you don't think this is possible talk to a trust lawyer. 

Does your lawyer or CPA have a glamour shot on their card?

I will definitely talk to a lawyer. while I set that up, does the following have any merit? 

I'm also not an accountant or lawyer, just passing on the info that I hear on a consistent basis.