Please accept my vote as a token of my appreciation.

Or, is a licensed contractor sufficient?

The closing takes about 3 to 4 months so once the closing has token place the investors will get back around 10,000 dollars( so the investor puts in 30,000 after 3 to 4 months get back 40,000).

You did not provide sufficient information about yourself to be able to cater an intelligent comment. 

If you do pull the trigger, make absolutely sure you budget sufficient maintenance & repair cost into your analysis. 

By the same token, if I think a contractor is raising his prices to take advantage of the fact that I rarely haggle, I'll happy just stop using the contractor without explanation (he'll figure it out). 

I hope you aren't hoping to wholesale, wholesale deals, as there isn't sufficient margin in most deals in Las Vegas to support one assignment, let alone two.

I guess either way I'm not too concerned and do expect to be flipping enough to produce sufficient income but I am new at this so I'm just trying to foresee as many scenarios as possible.

Should everything go well, COCR is infinite if I completely cash out, but in a B- / C+ residential pocket with minimal appreciation, is the cash flow sufficient?

ATTOM Data Solutions has released its Q1 2017 Single Family Rental (SFR) Market report, which ranks the best U.S. markets for buying single family rental properties in 2017.The report analyzed single family rental returns in 375 U.S. counties each with a population of at least 100,000 and sufficient rental and home price data, along with more than 6,000 U.S.