Income/GRMs tends to vary widely in 2-4 unit properties and is not very consistent in my markets and therefore, typically doesn't seem too meaningful in my 2-4 unit reports.

Will vary based on seller.

Your chances of landing a job where you will use your degree will be greatly reduced the longer you stay out of the field.

The reality is, it takes time, with risk and stress levels (varying by ones tolerance) that can de-motivate you along the way.

You can get 10k for a large 4/3 in town.Anytime you find a major event happening, you will find people doing just this.Now, you do need to empty out the house to some degree.

It varies state to state on HELOC's.

A portfolio of SFRs can be refinanced with a blanket portfolio loan using a local bank or credit union.These lenders often base their rates on  different benchmarks and spreads which can get you varying results.Just as an example, I got 2 different qoutes from banks this week on the same property.

Average DOM will vary from market to market (and market cycle to market cycle in the same market), and depends on a LOT of factors.

I looked at your profile and you're asking a lot of varied questions that seem to indicate you're trying to build knowledge about general investing.

Chicago has more 2-4 units then any other American city which is good and bad because the opinions you get will vary.