Towing is not even considered X-country since most the time you will end up at the same airport. I have also considered it back then, but I doubt it is any fun sitting over the shore praying at 500' with some weight on the tail. With CFI you will get at least some instrument time, and some cross country. Both needed for a 135 job in case the regionals are still not calling. You will also meet many more people and get your networking going. On the other hand if you are out of students, you will still need to eat.