I've traditionally relied on an Excel sheet, but it's not always convenient when I'm away from my computer.I recently came across an online calculator that seems to provide detailed metrics, including Cap Rate, IRR, and others.

A real estate attorney will be able to provide better guidance. 

Should I put in special tubs/showers or just hand bars, and provide a shower seat? 

I tried to get some elementary education on flipping such projects.So far, my limited conversations, provided me the following information.1.

We are considering a partnership where he provides funding and I will manage the projects.

There are exceptions of course but we usually want to work with smaller, local loan officers and brokers are usually the best option - usually.  

I do not want to change the loan terms, only the % interest rates. 

So, I want to buy this house with a conventional loan as a primary home to house hacking and take advantage of the separate meters and all of that.

I AM STILL DOING RESEARCH FOR SOMETHING TO CONVINCE ME TO TAKE OUT A $200,000 CONSTRUCTION LOAN FOR A $10,000 HOUSE.

the arv is best to get an opinion of a realtor and then an appraiser in the loan process