At the end of the day make the offer with your numbers, not emotion, and if it gets accepted right on.

I really admire the discipline for wanting to pay the loans off quickly, but fortunately you have the flexibility to do that with traditional home mortgages which typically don't have a prepay penalty.So, I've done 30-year loans on all my rental properties.  

Most owners or owners acting as PMs keep it professional with no emotional ties to tenants and keep it running as a business.

Discipline is the name of the game.  

Personally, I would walk away, but he's emotionally invested, so, I'm trying to give him at least some tips, where he should ask for changes in the contract, which probably won't happen. 

Remember to leave emotion out of it and think "Future Rental".

Let the seller know this is not an emotional buy and #'s must work.

Don't get emotionally involved with your own primary - FIRST, treat it as an investment!

Do not make any emotional decisions.  

I love studying successful people, and this may be funny but is it weird that sometimes when I'm in my room reading/learning something new, that I get emotional(tears in my eyes)?