I did some research online to see who should cover this and found mixed opinions.

I am doing it all in the first year, so that if they break this lease and move out in year 2 I have already covered the lump payment I received.How would you approach this?

Although the time saved might be worth the extra premium...So I've been to Birmingham a couple of times because I used to cover that area at my last job, and I thought that the city was really nice.

Since the HOA covers the exterior I only need to have a walls-in policy.What is a good way to determine the right amount of building coverage?

To get that 10% average, how many years does it cover?

If he is doing the work himself and hiring subs on top of it, he should be paid for his time he does the work and then his profit covers his GC work.

They are “investor friendly” and even cover Mobile homes.

closing on a fourplex in Folsom PA at the end of the month. was going to use a property manager but ill be living in one of the units for the first year( FHA loan) and will only be renting out 3 units. while the 3 units will coverage my mortgage payment it wont cover my expenses.

Make sure your insurance coverage covers your total value replacement and not the loan balance. 

If everything is covered and worst case is a new septic/roof/etc then I would have enough in there for the two most expensive worst case scenarios for each.