Seems like a nice craft, however you should first determine what you will be putting your vesel through.,ie. diving, fishing, how much weight you will be carrying etc, fuel, gear, crew... and how fast do you wish to go....consider maybe a larger power source if your funds allow. Yamaha, Suzuki or Honda all put out great 4-strokes. Some a a little heavier than others. A real good match would be a Suzuki 90 hp, good speed and power to bring quite a few friends and gear with you, or step up to a 115 Yamaha 4-stroke. Either way fuel effeciency will be great.
Ah yes...........thanks for the French site info. Fun to review.