All in all, I won't rule out having a C property...

How do you come up with an interest rate, in my research I found that the interest rate is normally higher than regular 30 year fixed rates but is there a general rule of thumb on how you come up with this?

If that will apply to companion animals is an open question.

I actually had a lender approve me for up to 200k but it was FHA and all the fixer uppers were out of the question as they didn't meet FHA rules, and the 3/2s were highly desirable and went well over 200, so I wasn't able to get anything last year. 

@Vincent Incopero Wow thanks for the note - I totally forgot about that 250k gain rule (probably one of the most important things for me to understand as a house hacker)!

I will have to look into the details just in case it makes sense before i completely rule it out.

Obviously, applying the same 1% cutoff  to a property in a C- neighborhood is dangerous.

Apply immediately for a rent increase. 

Many who agree save about 6 months of mortgage payments as a rule of thumb.

Reinvesting the funds has No bearing on taxes on the gain......the only time that applies is if you were doing a 1031.They will be due on his 2019 tax return.