The understanding that Epicurus was strongly anti-Platonic is a key insight that will help you as you study Epicurus. That's one of the real advantages of approaching Epicurus through DeWitt, because he talks a lot about that and prepares you for the implications of it, while many of the other general books about Epicurus hardly mention it at all.
Thanks for writing in with the comment and I hope you'll make many more. It's very helpful to hear peoples' reactions as they start the study of Epicurus.
And as far as I am concerned, the fact that you are not academic or a philosopher makes it much more likely that you'll be able to see where Epicurus was going more so than otherwise!