My thought would be spend way more time looking at deals, sourcing deals, closing deals, than reinventing a great well functioning wheel.   

For foreign contractors do you withhold tax of their pay?

One source of cities to avoid is Neighborhood Scout's 100 most dangerous cities.

Calling on the more experienced house flippers and wholesalers...Generically, what search criteria in List Source (or other list brokers) do you use for finding house flip deals?

For example, the avg annual home price appreciation rate in Jacksonville, FL is 4.3% per year (source: Federal Housing Finance Agency, www.fhfa.gov.) 

The thing died on the 91st day.I know a lot of landlords buy appliances from the sources John mentioned (Craigslist, FB Marketplace). 

If we hire a Non US VA, I am supposed to withhold 30% of the pay for tax reporting. The contractor wants to use his uncle's construction company LLC located in US to be the contractor and he becomes the subcontractor ...

Yes, it was added sometimes, but your statements are extraordinarily misleading and hysteria-producing.Extremely low levels that appear simply because a material is naturally sourced haven't ever been show to be a particular danger. 

This is the source of much of the gentrification conflict, because it's a conflict of extremes.Second, make every district responsible for paying its own bills and also for its own zoning. 

I'm looking to crowd source some best practices from the BP nation.