As a good investor, always always keep this in mind, especially when you get an insane deal, how is the service provider give me an insane below market deal and still keep a successful business running?

He has not provided any copies of utility bills and apparently is the "gardner" that is billing them $200 a month. 

They provide insights, connections, and expertise that can help investors find and secure deals that meet their investment criteria, including those that involve distressed properties or sellers in unique situations.

I just want to make sure that we provide the tenants with adequate notice..PS.

Providing the cash flow will support the loan payments.

Remember with every rental purchased you are planting seeds for a tree that will mature to provide fruit forever.

I always have tenants provide me with an emergency contact.

Emails and voicemails are do not always provide that assurance.

Please note, based on the numbers provided you will not be cash flowing. 154k loan amount - 30Y fixed  4k in annual taxes & Insurance 7.75% Rate Monthly PITI Payment = $1,436.60Your estimated rental income is only 1k-1.4k per month.

First, as Tanner suggested, engage a general contractor to assess the property and provide a detailed rehab estimate.