If we adopt this mentality, then all OB/GYN doctors should be female and have children.

Evaluating different options from that standpoint will allow you to best determine what will truly move the needle in terms of your wealth building. 

When under contract at 300k with the expectation that codes would be the determining factor on what can be done on with the property, as it relates to new construction.

The loan to value that you can go up to will mainly be determined by your age.

You have to determine if their offer is acceptable to you or not.

Yes, when there are multiple adult occupants, you would typically combine their gross incomes to determine if they meet the income criteria.

When under contract at 300k with the expectation that codes would be the determining factor on what can be done on with the property, as it relates to new construction.

There are other ways to determine rental amounts like researching in zillow and/or rentometer, which I typically reference.

It's important to consult with an attorney or an accountant to determine whether an LLC is the right choice for your specific situation.You can reach out to me and my team who can guide you through the process and help you navigate any challenges that may arise.

With that being said, the interest rate is going to be the single biggest determining factor for whether you're barely breaking even, or seeing a decent monthly cash flow.