Hi Zachary, I never realised how close the Dutch language is because I can understand every word of Bernd's reply to you. Apart from the boring details about materials he is emphatically advising you to build the Duo 900 catamaran which I also agree with wholeheartedly. It is a great looking boat with usable accomodation and it looks fast just standing still.
Welcome to the forum and best wishes for whichever design you choose
regards
Bryan Cox
bryanandmarycox