It depends on what you mean by amateur. If you plan on becoming serious about filmmaking, whether you want to produce short films, documentaries, features, web series, or even just make some extra cash doing wedding videos once in a while, then the Adobe series is absolutely essential and worth the cost.
If you just want to make stuff for fun and family gatherings and things of that nature, you probably do not need to go as high end as that - try Vegas or something similar.