Sammie,
My heart goes out to you and I'm glad you brought up some of these questions--as Brian says, we all have to face this at some point.
The UK site cancerbackup has a lot of information on both the practical and emotional sides of end-of-life issues and I go back and read it frequently--it's not morbid, it's helpful.
I am ready to 'hand over' to hospice when the time is near, though my beloved partner wants to carry on taking care of me for as long as he possibly can.

I admire you and think you are being very sensible to try and prepare yoursellf--knowledge replaces blind panic.
Take care of yourself too and have a support network in place for yourself for over the next few months--and beyond,

Brenda