Landscape design on the coast

I am looking for a landscape designer to help me make plans on the coast of a city , its a line of 450 m ,hoping to create new spaces and functions while maintaining a low-maintenance and sustainable design. My budget for this project is only $120, and I am hoping to have it completed within 1 week , Ideal skills for this job include experience in coastal landscaping, knowledge of sustainable design principles, and the ability to create functional outdoor spaces. I need sections , elevations and main master plan of the site .