Where do you want to spend your money? if it is at Sephora I think Sephora brush collection (I really like #28 small dome cream brush, #90 complexion brush and #56) and MUFE brushes ( #216 Medium precision eye blender, #226 medium eye shader, #156 large flat blush brush good for contouring also!) will cover your basic need and more. If you want to do some online shopping check Beautlish for Chikuhodo and Wayne Goss (I personally have #2 powder brush, #19 medium crease brush and #4 smaller crease brush from WG) brushes they are really nice.
I think you only need a powder brush, blush brush, crease brush, detail brush, eyeliner brush, and eye shadow brush.
your husband really gave you a nice gift!!!