re: 5yr. Balloon Loan w/ 10yr. Amort. (Any hidden things I should worry about?)

Why are you not looking into a long term fixed rate? I agree with the above id rather lock in a long term fixed rate now than have a balloon. It can't be that big of a difference is it? Rates are so low right now I'd have no issue paying .25 more for a fixed rate. If life happens and you have to refinance in 2-4 years there's a good chance these low rates will be gone plus you'll have the piece of mind of no balloon payment.

I don't see the balloon as a big deal and it will
Motivate you to pay it off faster. I just think with historically low rates a long term fixed makes so much sense.