
I am at a loss to imagine why would you need the extra 11". And if you ever do, I think that Crypto's suggestion is a lot better solution with the Giotto head. It is very cheap and will add more flexibility.
Just MO.
I think your right, when I look at the pics of Crypto I think I have enought with 7", he has exaclty the same config as me... Seems perfect
Thanks you all for your input.
Laurent.