You just have to factor in the returns from what your invest the money into this was VS how the rental house would perform. 

High to mid 6s depending how much down. 

If they break them it is less expensive to replace a rod then a door   For showers use a door but a high quality frameless shower door.   

You don't HAVE to buy points, but if you have a high DTI, the lender might not be able to do the deal unless you do, we can't tell from the information that you've provided here. 

RentingFamilyMember is not interetsed in making money, just not paying the food, utilities, etc. of the SiblingRenter.(2) RentingFamilyMember's AGI is too high and Schedule E passive losses are limited.

Have them perform specific tasks and issue invoices that the LLC would pay.

Ask what the reference's name is, how the reference knows them, and then ask open-ended questions to verify application details (how much is rent, how many people are living there, how much do they earn, what are their smoking habits, address, work performance, etc.).

- You missed utilities in your holding costs- For your first rehab you should plan on a little more than 6 months, just in case- You might want to double check your tax number as taxes in NY can be pretty high- The biggest area where mistakes are made for new investors when it comes to flips and BRRRRs are in the ARV and the rehab cost.

As for doing work yourself, you are a high paid SW engineer.  

You just have to ensure that the mortgage balance is not higher than your offer; otherwise, the seller would have to come up with money to close, which is highly unlikely.