I believe someone already mentioned that your comfort level is key.

Most everything you see on the consumer level is just purchased and packaged big data with UI's targeting a specific use or audience. 

In the Biggerpockets Podcast #279 - Andrew Cushman shared some ways he analyzes deals. 1) Buy in an area where median income is 35K or highercity-data.comrichblockspoorblocks.com2) Poverty level is less that 15%3) Property is not in a flood zoneUse FEMA website - pull flood zone map4) Property is in a low crime areaUse Trulia.com crime map as an initial screenHe doesn't buy anything less than low crimeIf considering buying, go to local police department and inquire about the area. 5) Above average population growth USA.comStay away from negative population growthTown should exceed the national growth average - this is a good sign. 

I love it, my energy level is pretty awesome!

I just got a packet of 10 this morning actually at exactly that level.

It is very encouraging and has definitely made me want to challenge the world of real estate on another level!!

Providing I get the price and down payment down to the level I want with obviously positive cash, what would your exit strategy be at the end of 7 years?

A lot depends on syndicator fees and the size of the project however I'm seeing most spreads at the 70/30, 60/40, & 50/50 level.

It depends on your tolerance level.

Some good points in this thread and to a large degree this is a matter of your personal comfort level.