heuhen: 25 combi and cruiser

The hull is from Viksund 25 Colombi some was built from 1974 to 1978. Some can do 7.5 - 8 knots with a Yanmar 28hp. the dimesion of the old boat was: length: 7.62 meter Width: 2.70 meter depth: 1.00 meter Wight: 3300 kg! ballast: 300 kg (600 kg with sail) The hull is high because it shall take high sea with no problem?!?!??!?!:-\ The dimension will be like the old one but it will have: 600kg ballast some cruiser, ore 800 - 1000kg ballast some Workboat depend one what type of work it will do. Behind the small sofa will it be a small kitchen with a gas grill. The boat "can" have a toilet. The sunbed is 2.74 meter long and 2.11 meter width!? take that! Comment please, so you can tell me wath/if/maybe: can be bether or just comment a Idea. And i will see if it can go in the boat.