If they did no due diligence, for a 506c it is up to them to verify accreditation but also do not think if the deal goes sour that you can claim you did not know, as its also up to you and you knowingly filed a fraudulent subscription agreement by marking you are accredited.Two wrongs do not make a right. 

Review their management agreement.

JD made some solid points on structuring the agreement etc. 

From a partnership agreement perspective, you can set it up however you'd like.

Liability Protection: Transferring to an LLC provides asset protection but may not always be worth the hassle or cost.Next Steps: Review your loan agreements, consult your lender, and get advice from a real estate attorney and tax pro to ensure everything’s compliant and beneficial.

Review your management agreement—it will outline all fees and responsibilities.

In order to defer all tax you must purchase at least as much real estate as you sold. 

Signing the buyers brokers agreement is only needed when you identify a property

-Signing lease agreements via portalI am working on  automating and hiring a VA to handle all advertising, applications, and lease agreements.Allowing my onsite managers to focus more on the day to dayI looked into Rentalutions but I'm cheap!!  

The tenant would pay the landlord stated on the lease agreement.