Hi Debbie - best advice I can give you is to send hubby on a lighting course for a day - he'll get a great insight into lighting, backgrounds, light modifiers and where and when to use each of these things - he'll then make a more informed purchasing decision as to what will suit the sort of shots he wants to take.
There's an old phrase, buy cheap - buy twice!
Good luck though - sounds like 2012 will be a fun year in your household