Family portrait photoshop needed

I would like for someone to use certain people out of these photos to create one image. I’ve seen some peoples work and it’s very obvious it’s cropped. I’m hoping someone can use their photoshop magic to make the image look as authentic as possible, as if it’s not a crop and merge pic but an actual picture taken. and if possible, I would like to change the outfits and hairstyles as well. Maybe even facial expressions. Is this possible? Only 3 people I’d like in the photo.