If you sell it then you give up a monthly Cash Flow stream , BUT you get a large Sum of money for the use of maybe paying Cash for a Property ( assuming you can find one that makes sense to pay for it in Cash )Thank you for any an all advice

Part of what you have not taken into account is the timing of receipt of your profits.By selling with seller financing, you delay receipt of a portion of your profits which the seller may desire if he/she would rather have an income stream such as in retirement.A flipper, by contrast wants to most money (cash) from the sale as possible to then move on to the next project.Question?  

Public forums and stories, oh well....Dion and Lynn had some good points.Specific advice, good advice cannot be given here, unless you spill the beans about grandma's personal finances on the internet.Things to consider:She is 80 so that means she is on Medicare.

Brent has a crew, a warehouse, gobs of tools, and a steady stream of people calling for rentals, work done at their rentals, and people dropping off cabinets, toilets etc (warehouse is next to recycling center... sweet huh?).

If my offer is higher than what they are owed, are they likely to take it or are banks using foreclosures as an income stream?

I have documented ALL of the emails, one streaming after another, with a final email listing the five dates over 5 months, when nothing was found wrong with the washer and a request for her to pay half of the service fees.  

Don't think you can jump through the smoke and mirrors of no money down or contracts to create an income stream overnight - - that would certainly lead to financial disaster.Be pragmatic.Wishing for your every success in the job market AND in REI.

However, flipping might be another way to get another revenue stream while I work and have a full time job.

I think the slow steady cash flow homes build wealth as well as a stream of income.  

You need to identify two things here - (1) Do they understand how to value income stream properties & are they open to being educated about it?