Architectural CAD Design for Contemporary Home

Cad design for 2500 sq. ft. new home build 50 ft by 50 ft. Vaulted ceilings 20 ft to slop on both sides to 15 ft in great room & kitchen, 9 ft height in bedrooms, if possible? We have done a rough draft ourselves, need help with scaling sizes of rooms, spaces, height, width, length to utilize space best, placement of kitchen setup for best design & options. Almost floor to ceiling windows in best design positions throughout home. It is a 2 bedroom 2 1/2 bathroom, open floor plan great room & kitchen, it is a spilt living with the master bedroom, bathroom, closet being scaled to utilize as much space as possible, with door to backyard. Guest bedroom with bathroom, closet at 9 ft ceiling with bathroom, closet no door to backyard. It will have a double sided stone fire place with seating edge in great room & back side of back patio area on one side of great room toward backyard. It will also include a multi- use room. With washer / dryer, sink with folding table, clothing rack, bench, 1/2 bathroom will also be in this area with a shower rinse off area to be first from entry door from covered breezeway from oversized garage. Same decking in backyard covered patio area middle will be pool & spa.