Perhaps I am wrong, but I thought that Eurocontrol charges only apply to a/c of an MTOW of 2400kg or more, hence the popularity of the PA23/BE58 etc.
As for the a/c, I work on the principal that if you want to make money out of something and unless you are really sure of your ground and the item is so unusual it may just work, stick to the manufacturer of a tried and tested product.
The Cessna Citation range of a/c are a proven and economic product, the rest have a lot to prove.