Should I proceed with an impending live-in arrangement?

I met her six months ago and we live seven hours apart. We have seen each other every other weekend since then and have made one trip to the Southwest together. All of this has been great fun. We get along very well together. But I have always known each time that it ends in a couple of days and its back to living alone. And I like living alone. I like it very much. Then she got an easy transfer with her company to where I live and living together was the natural extension. I was going to can it, but the very weekend I was going to do it, she had a huge breast cancer scare (and it may be more than a scare), but is coming anyway to start her new job. And she is gonna live with me. I could not bring this up when she was going out of her gourd with the cancer scare. And I’m thinking, just as soon as she is settled in her job and has the the medical issue settled….probably six weeks, I am gonna end the living together thing. I feel like she is imposing on my space and I dont want a relationship this close. Comments and suggestions on any aspect of this?