The more control they have, the easier it is for them to manufacture a dictatorial takeover.

If so, make sure agreement is in writing, signed by both parties, specifies new end date and ensures any existing security deposit will still be dealt with properly per landlord/tenant laws, and I'd also ask for a partial payment to be issued at signing to make obtaining his new place easier.  

Start with an easier and more realistic project.

So for a good deal flow you need to market, your farm needs to be several thousand units large.Frankly, it's a lot easier to become an agent.To that regard I’ve seen a real estate agent spend half of what it would have taken to built a profitable wholesaling business and become THE dominate agent in our city of 135,000 people.  

I have started using a spreadsheet but I would like something that makes it easier to keep track of when I have sent the owners a letter or postcard etc; also to attach a picture of the property and some pdf's of county record documents.

@Shango Collier the sellers would need to speak with a lender regarding what proof would be needed to "ignore" the payment on a property where someone else is making the payment.Or it, might be easier to convince a lender to treat the Land Contract like a lease, so 75% of the income could be used to offset the PITI.

It will likely be more difficult to rent to a able-bodied tenants and much easier to rent to disabled tenants, possibly at a premium since it is (almost) ready to go.

As I've seen when helping clients buy businesses, the SBA usually gives you an easier time for those that bundle the real estate in with the deal 

But once i get the knack of how PM works, it would be easier for me to expand my horizons in this market.Thank you

As has been mentioned, great photos and amenities are incredibly important.