Our Underwrite takes 24-48 Hours, if we are provided with clean and correct documents.

The only other options I can see are A) your mom partnering with you rather then selling the property to you - you become 50% owner and bring the funds and management to the rental while she provides the existing equity as her contribution; or B) your mom lending you the rehab cash out of her personal funds while also seller financing the house to you. 

I would find out who the manufacturer is and send it to them and confirm they will provide a warranty on this.

I heard that PropStream updates this data on a weekly to monthly basis, whereas PropertyRadar updates the data daily, providing fresher leads.

I also hold a couple of real estate forums in the area for people like yourselves to connect with service providers, GC's, etc. 

My focus is on providing either turnkey-style space for those interested in temporary, infrequent use or long-term leasing for business folks who require conference room space (or perhaps event space).  

Please provide the pros and cons of this system.

The reality is the opposite - if it's not in writing then the PMC doesn't have to provide the service or can charge extra for it!

I do value her as a cleaner and she definitely goes the extra mile and are the eyes and ears on the ground for me.

I specialize In helping investors like yourself locate, and secure investment properties and provide a hands off experience along the way.