Late to the party but thought I would add my 2 cents anyway.
I have actually started thinking about doing the same thing. I am in a very similar circumstance when it comes to the collection. Also, I find myself on the fence in regards to what to do. It is not like it is a pressing issue however so I figure I can sleep on it for a while. There are arguments on both sides variety vs. value etc. In the end you have to do what is best for you so if the feeling is strong enough then you should just do it. Besides if after you clear the box and are not satisfied you can always start again. Looking, searching and collecting is half the fun anyway