I have stopped now. I simply wanted the Starter Kits so I could learn those basics and I wanted one module outside of the Starter Packs and Beyond Valor seemed to be one that was required for other potential scenarios...if I got any more.
But I am content with this as a base and there's plenty of gaming in there.
I did also buy the ASL Pocket Rulebook because I thought it would probably be a requirement. I also heard it was well written and easily usable as a reference which I hope is the case because I'm always using rulebooks as references which is why I'm always bitching about manuals without an index