refine + optimize website

Hello, we are looking for a squarespace-expert, who can refine and optimize our new and 85% ready-to-go website ASAP. Throughout 5 Pages 25% of all Photos, Graphics, Videos and Copy need to be replaced and/or positioned slightly different, based on a given guide for each page. (We are aware, that the chosen Template is limiting the design) Privacy + Legal Copy needs to implemented.