Hello and welcome!
I am not sure what all you get in those packs, but 3-4 agents, some cultists and random monsters should last you a long time. While game doesn't need many miniatures (less than 10 most of the time for me), collecting one of each profiles becomes quite a task, hehe.
I will make sure I take a more detailed look at your blog and will follow it - I am always eager to see what others do regarding to SA.
As for 3x3 table - games are played on 2x3 so its perfect!