What tennis racquet is recommended?

I am 12 years old and I play tennis regularly (about 4 times a week). I play to a reasonable standard and my british LTA rating is 9.2 and very nearly 9.1 I would like a racquet which is around 26.5 inches and weighs around 275grams. I would rather a small head size (under 100 sq. inches). I play with a lot of topspin and quite abit of power, I have reasonable control and I would prefer a string tension of around 58-59 and my preffered brands are head and wilson. Although that doesn't matter too much.

Here is a 13 year old girl using an Adidas Barricade Tour. It is very heavy, and has a small head 98sq inch. She plays with both power and top spin. It is not a girls raquet.

http://www.youtube.com/watch?v=xyCvWE8Edpw strokes

http://www.youtube.com/watch?v=cik6azSGqm8 game footage