Add Person Into Group Photo

I have a casual group shot of four family members and need one more person seamlessly composited into it. I already know exactly where that person should appear, so I’ll provide a marked reference layer along with the source files... (Budget: $30 - $250 USD, Jobs: Affinity Photo, After Effects, Color Grading, Graphic Design, Image Analysis, Image Consultation, Image Processing, Photo Editing, Photoshop, Photoshop Design)