Site development costs can very submarket by submarket. 

This seems about right for the scenario, yes Non QM and DSCR can have slightly higher rates but if the benefits of the product outweigh the cost, you've got your answer as to if the value is worth it.

It could be a big number of rooms house or a duplex where one side is smaller (manager quaters) when the other is bigger one.

Short answer, redemption includes the VALUE (not the cost) of post-foreclosure improvements, no matter who made them.

I am an Assistant Property Manager and we have a few owners who prefer to manage without paying a fee monthly, but they will use us to help secure qualified tenants.

A much simpler strategy may be to sell the property, buy a new property, do a cost-seg analysis and take Bonus Depreciation. 

(They might want more since RE commission costs to seller will be +/- $50k) $600k LA at 5% interest only for 5 years = $30k/year interest income X 5 years = $150k interest income. 

I own an investor-friendly real estate brokerage and property management company here in Clarksville.

I specialize in investors & also self manage my own portfolio of rentals and it does really well, this experience helps me connect you to the absolute best property manager in Memphis since I know how its done.

You can have a property manager.