Hey, welcome to AN!
I personally used Heinnemann but I have also heard that NoB has lots of unnecessary info. I haven't used the 1/2 AN notes, but if they're anything like the 3/4 notes they are great. They won't give you a lot of the example type stuff that the textbooks have but you don't need to know that anyway, its just there to help you learn it.
I would avoid using the outdated books as you might accidentally learn something wrong. Personally what I would do is use your textbook for in class learning and then go over the AN notes as homework/to clear up any confusion. If you still don't understand something you can ask here
If you need extra questions for something then you can use the outdated workbooks - just make sure you only do the sections that are still relevant.
With regards to the workbooks I would use heinnemann and biozone regularly, but save checkpoints for SAC prep. By that I mean don't use checkpoints to
learn content, use it to check that you know it, as checkpoints tends to have more exam-style questions which are more realistic.
With using multiple resources like you are, if there is something that is different, check with your teacher or ask here, even textbooks have mistakes sometimes.
I definitely wouldn't buy anything else, you have plenty to use, if you decide you need something else you can always buy it later, you don't want to waste money on things you won't use.