I like Bell. I really think he would be good coming in at 3, and Shah down the order. Now I'm no expert on English cricket, but with that stat you provided just proves that 3 would be great for him. You only want to bat once in a Test, and to do that your top order needs to fire. England are more then capable of scoring 500+ with Cook, Strauss, Bell and KP in the top order. Then some late runs by Colly and fast runs by Shah will get you to that 500 mark.
When was the last time that top order got 500?
Judging by CricInfo I think it was May '07 vs WIndies.