In addition, our worst SFR (as far as cash flow was going) had their lease come up and they moved out to buy a house of their own.

Every rental housing unit shall provide at least two hundred twenty (220) square feet of floor area for the first two (2) occupants and one hundred (100) square feet of floor area for each additional occupant.

He hired some additional help and said it would take him a week(I estimated 3-4) to finish. 

I'll tell you right now, I wouldn't spend any additional money on staging. 

Multiplication is better than addition.

What additional data would you gather remotely? 

PM me if you would like additional information.

In addition to a legal egress window, a bedroom must also have a closet.

You can also structure in some additional terms about who and how significant repairs are handled, but that will also tend to tip in the owner/investors favor.* When selling a property on a lease option, realtor commissions are not necessary.* Check your state laws and talk to a REI attorney and escrow/title company about facilitating the transaction and all the needed paperwork for your area.

( addition tore off, or are you exaggerating the roof)  based on your project details, id guess 45k+ in rehab .... building a second story would be out of the picture for me.