option arm subject to

[Sarah Jones]

I have a girl that is willing to do a subject to do, but this one has an option arm. She had a 5 year option arm... with 4 payment options. One of the payment was negative, one was interest only, one was princal interest, etc... the 5 year fix has expired and now it is adjustable... her payment now is $2700 per month PITI fully amortized... my question is if i take this house subject to .. i am fine paying $2700 per month but becuase this loan is not fixed... is this a good deal to take out? in the worst case what can my loan amount be?

im not understanding option arm to well... what happens to the loan after the fixed period.. do i have to refi again? what if i dont refi? can i keep paying it for 30 years?