You'll have to lose the fob for the remote start because even with the smart key, the car won't start unless the fob is INSIDE the car (it won't even start if someone tries to start it and I'm standing outside the door.
Last I heard there were no hacks at this current point of time for the smart key system, but that was many months ago, so there might be somebody that has figured out how to do so without sacrificing a fob.