Does anyone add extended warranties for new appliances?

If you have  a signed lease, for something resembling market rent, you'll be able to stay for the duration of the lease, provided it isn't an owner/occupant buyer, which would be unlikely. 

I want to know if I can extend the balloon?

When I bought my airplane some years ago, I took flying lessons long before asking how the landing gear extended while in flight.Good luck and hope it turns out well for you.

Fannie Mae extended the incentive program until June 30, 2014.  

Also check out the start here page for some great quick links including the Ultimate Beginners Guide As for your question - I highly recommend the following- network like crazy, never know who knows what and where they invest - learn locally but ALSO connect with Florida investors to begin learning - develop a solid business plan and know the sections that will require tailoring depending on your investing region- assess the investment type and implications if you move (flips, wholesales, LTO, and rentals will all have different implications for investment duration - learn as much as you can (BP blog, forums, podcast are a great start) and don't be afraid to jump in once you have done your homework-Keith 

Keep several months of reserves to cover your mortgage in case of extended vacancies. 6 months is a good bet.Another BP rule you are going to hear a lot is the 2% rule.

that way they can't go into court and say you are just extending the contract. 

That said, get the extended warranty, just because.

Would it be worthwhile to offer 30K cash with the clause of keeping the current loan in place over the duration of the loan?