Your mileage may vary. 

Really depends on what you are looking to do / what markets.

FMV would be completely dependent on the condition of the property.

For a 3 unit building with one unit as a commercial space/retail space I would use either a 7 or 10% vacancy factor and perhaps higher depending on the viability/business strength of the restaurant.

Again, while this may vary by state, the states where I have LLCs explicitly prevent piercing the veil of single-member LLCs except in cases when there is fraud.CT General Statutes "Sec. 34-251a.

Depends on the square footage of the house to begin with.

Michael,With regard to insuring the condo units, the amount of building coverage you should have on your policy depends on what parts of the building you own. 

This way, you can have passive income coming in from multiple properties regardless of where you are living at the time.Ultimately, the best strategy for you will depend on your long-term goals, risk tolerance, and level of involvement you want in managing the properties.

Someone with some good experience, I would anticipate 10-12% interest only for 6-12 months with varying degrees of lending to ARV.

Just depends on goals and needs