Yes, you can do the battery only powered, but they are usually more expensive, even more so if you get the interconnected ones which I feel are safer.

Giving one for a loan like this is appropriate and should make your lender feel safer.

I'd recommend booking a place soon if possible.There are very few oceanfront rentals in that price range, Kitty hawk is a good bet as many of the ocean front homes there are smaller.

Your best bet might be trying to find properties with financing in place?

I only bet on black @Roy N.

My first CC was a visa through Comerica, however, based on a suggestion by my Mortgage broker, I would say your best bet is try to get a chase visa card.

It’s a very good loophole though, just use an accountant that is filing like this for others, I believe Brandon hall is the one who pioneered this and would be your best bet to go to with your situation. 

I bet the Zillow application is pretty good as well but I have heard many good things about cozy and turbo tenant. 

I dont know anything really about this, but I bet it would make you a better investor..

Just do whatever hedges your bets...like in my case...go first class on the details/energy measures/ landscaping and hope for the best.