Hi gbemi,
It sounds like you're just starting out. Have you done any studying so far? With a potential Test Date in January, you've given yourself plenty of time to study, which is good.
If you're just beginning, then it would be a good idea to take a FULL-LENGTH practice CAT Test; you can download 2 for free from
www.mba.com (and they come with some additional practice materials). If you'd like to do a bit of study beforehand, so that you can familiarize yourself with the general concepts and question types, then that would be okay - but you shouldn't wait too long to take that first CAT. A FULL CAT takes about 4 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have those scores, you should report back here and we can come up with a study plan.
When it comes to studying for the GMAT, there are LOTS of different resources to choose from. Many Test Takers use a variety of study materials, beyond just books, so it's likely that you'll need other resources besides the ones that you've listed.
GMAT assassins aren't born, they're made,
Rich