Current thinking is:a) 70% rule, for immediate resale scenariob) BRRRR, Build and hold as rental scenario Thanks in advance for any suggestions!

I would suggest looking into syndications as well.

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).

I suggest using a service like Mayistay.

One on beds, one being laundered, and one clean set in the closet.Not sure about the infrastructure in that market but I did not see it suggested you use a commercial laundry. 

All of the things you suggest are options to the beneficiaries. 

Denver and its surrounds have particularly active markets and a lot of active individuals offering ancillary services so I'd suggest you research those available services you're looking at offering to help you get an idea for what is well covered, what is lacking and what your competitor's pricing looks like.

Can anyone suggest Property Managers in the Columbia, SC market?

Thanks in advance for the recommendations / suggestions!  

You can read a book and multiple books, but unless you are out there doing it (I.e. getting bids and getting contractors to truly get you an exact estimate) you will be far off from the numbers you want and may even lose money on the flip/rehab.The best advice I would suggest in my experience is that you should get into the line of work by either partnering with someone or working with someone on some projects prior to going into a flip on your own.