Just a general question as I consider long term planning for things like mortgage and what not...

Is there a such thing as too many credit cards, assuming you have or can achieve a healthy util? Right now I have 5 cc and 2 store cards, all in healthy standing. Util is good but can be better, and I have time to do that. My most recent card is 6 months old, and I'm at least a year from any potential mortgage. Most recent EQ score was 650 in October, if that matters.