Due to your location and the relatively low rise of water temp, I bet you could get away with one of their smaller models, which only draw 50 or 60 amps, respectively.

I don't know the statistic, but I'm willing to bet it's higher for partnerships. 

Regularvacancies are obviously never included in such insurance agreements, so overall, reserves would be the best bet.

Your best bet is to do a full rehab on the place.  

Number two FHA loans are not very desireable by sellers; they'd rather sell to someone with a conventional loan - or of course cash.Depending on the property your best bet might be a low down conventional loan (5% down) and then fund the remodel after the purchase either through hard money, family money or you can borrow from your own 401k for example!

Rent growth is why long term prime CA real estate is a great long term bet.

I think your best bet would be to put a long/medium term tenant in the basement and airbnb out the ADU.

Why is the strategy so popular?

Traveling South I think you can explore Quincy/Braintree and a more affordable Abington/Weymouth that's been very popular in the recent years. 

it would be my first.Co-ops are popular here and are the most affordable.Is this a good way to start,to  buy and turn it into a rental?