The choice is yours.

You can make this transfer to a limited liability company (LLC), provided that "The mortgage loan was purchased or securitized by Fannie Mae on or after June 1, 2016, andthe LLC is controlled by the original borrower or the original borrower owns a majority interest in the LLC, and if the transfer results in a permitted change of occupancy type to an investment property, such change does not violate the security instrument (for example, the 12 month occupancy requirement for a principal residence).Note: The servicer must notify the borrower that a property transferred to an LLC must be transferred back to a natural person prior to any subsequent refinance application in order to meet Fannie Mae’s Selling Guide underwriting requirements."

For the actual transaction + rehab I will need to borrow funds. 

No choice. 

I'd invest in a generator, either rent, borrow or purchase to run fans and dehumidifiers. 

I am helping my mom manage her portfolio which is mostly intertwined with my own since she has capital but no borrowing power and I have no capital but have borrowing power.

If I used hard money for the down payment I don't think I could cover the mortgage and cover the hard money loan and if I borrowed down payment and rehabbed it and refinanced I don't think I could pull enough out to pay back the initial 20%.

My borrower did a beautiful fix and flip in Baltimore City - got a contract where the buyer is getting a VA loan.

@Brandon Anderson There are a lot of options in the private money/hard money space for LLC borrowers who want to not only do rehab loans but also long term rental loans. 

Would a homeowner/defaulted borrower still need a place to live?