I will use 75k of that in margin equity line of credit that I hold.

While I am not familiar with how much more money you will get for your current home as a STR for the extra bed and bath, skipping that reno might be worth considering to help give yourself more margin of error on future deals.

There's tons of business out there at higher profit margins and lower stress levels.

This should help him but marginal applicants are going to have a harder time finding housing.  

., I need a better system.If I can even marginally improve those things, I'd increase my revenue a ton.

Comps from a few years ago are of marginal value.

Low cost/High margin: If purchased correctly in a prime location with reliable management in place, the investment can be a home run or at least a solid base hit.

That is a great margin.

And in this market the other phenomenon you may experience, like I did in 2006~2008 timeframe, is that when you do bid, others with lower margin expectations will step right in and file a SP-403 (upset bid) right behind you.

What are your margins?