That was a special program back then, not sure if it's still done.

I had already found the Law Firm of Mark Kohler (just google him) who specializes in 'self directed' account including setting up the LLCs for them.

Existing mold that is isolated (that's the key word here) can easily be killed with chemicals (don't use bleach, get a specialized mold killer, sold everywhere) or ozone.

Nothing else special is needed outside the normal here.

I work in real estate specialized in financing expats and foreigners investing in Czech Republic, both buy-to-let and residentials.20% is preferable but you can do with 10% as well - count with interest rate 0,3-0,7% higher than with 20% down payment.

David,Insurance policies for flips are structured different than those created for buy and holds.Flipping policies will give you coverage during the renovation time period as well as any long term vacancy, usually more than 60 days.A buy and hold policy expects the property to be rented and can deny claims related to major renovations or during a long term vacancy.There are specialized insurance programs built for flipping that most flipper will use. 

There are many accountants on this platform who specialize in taxation for real estate investors.

People who are very experienced at renovations/building aren't just going to show the special sauce on what took years to learn. 

I know of a few lenders that specialize in this type of service. 

It starts with a self-directed IRA held by a custodian, but the IRA simply makes one investment into a specially designed LLC entity.