With $50K and a DSCR loan, your budget will likely cap at properties in the $150K-$170K range, depending on the closing costs and any repairs needed.

For mobile homes, it often depends on whether the property is considered real estate (attached to land) or personal property (if it’s not).

I can't say when that will be but 4.125 is quite a lot depending on the rate you get.I personally want a hassle free funding experience and the lower rate.

And it depends on what you do next - rebuild or sell as is or some other plan. 

As a long-term hold investor, I see this property as -$600/mo to -$800/mo depending on whether you use a PM or not.

For bookkeeping it depends on your portfolio.A portfolio of 1-3 SFR's can likely be a DIY project.For 4+ you may want to consider outsourcing.For tax prep, you'll likely want to have a pro handle it regardless of the portfolio size.

It will likely depend on where you are looking. 

It will be highly dependent on the district and licensing.

This also depends on how are you calculate cash flow and what you're using to discount for expenses.

The management companies & local investors usually lease places up within 1-2 weeks max (depending on if you want to hold out of higher rents) How would you think about leasing these out?