Your parents will kick you out if you don't get an A? Wow I don't envy you!
As for what books - well it's a different specification, so covers different content. I used my main text books and exam papers exclusively. That worked for me. The CGP books are quite good, but they didn't work as well for my as my combination. You still have a lot of time so experiment with different books and see what works.
I took the AS in may 05, then retook jan 06, then did my A2 in may 06.
I started revising for my AS like the night before - hence the D. For the retake I started in something like october. For the final I started in feb-march.
As for university - You get whatever grades you get at AS - eg ABBB, and your teachers will probably predict you AAAA. Now as long as you don't accept the grades you got (ABBB) then your unis will only see AAAA - which is what you want. However, this means retaking to improve the grade in jan - which I'd suggest to anyone anyway, as itll help for A2.
I seriously doubt your parents will kick you out unless you get an A. They just won't and are probably using this as a threat into getting you working.
w00tt