Specific “Subject To” Question

[Treson Allen]

I have an opportunity to do a subject to deal but had a few questions prior to moving forward. With this particular deal the seller just wants to get rid of the house the simplest way possible but doesn’t have a great deal of equity. So subject to seems like the best option but I need to know what exactly do I need to do to be able to refinance with a bank in 8 months.  She wants to sell me the house for the exact amount she owes the bank and there is little rehab necessary. 

It just so happened that my wife and I are looking for a home to purchase and we really like this one but we are in the middle of a lease. So the plan is to buy this house with a subject to, rent it out for 8 months and then refinance with a lender to make this our primary residence.

All in all I want to know is how can I set this deal up in a way I can refinance into my name in 8 months while keeping out of pocket cost down as much as possible.