Dropping an inland sponsorship application in process for nominee program?

[Tyson2014]

Hi, we are looking at doing the inland sponsorship through marriage. My gf has 4 months before her working holiday visa runs out. It would now be cutting it close for her work permit to get here before her visa runs out (it runs out at the end of February). She would like to do the nominee program but she won't know until late December if her contract will be renewed. We are thinking of sending the application for sponsorship then cancelling if everything looks good for the nominee program. Does anyone know how CIC would react to this and is there and other problems with this that would come up? Thanks