Background Replacement

I'm looking for a skilled photo editor to replace the background of my images with a garden setting. I need to keep the subjects in the front with adaption in the back . Currently, the background has pool house, lattice, brick wall. I need to replace with greenery from another part of the yard while still retaining the pool and stone floor under their feet. I have both images in raw. I need a quick tournaround. I also need the new picture to have the ability for me to use the background with other groupings of subjects in the same area.

Requirements:
- Preserve the original subjects in the photo
- Seamlessly integrate garden greenery as part of the background
- Incorporate pool and stone floor elements

Ideal Skills and Experience:
- Proficiency in photo editing software (e.g., Photoshop)
- Experience with background replacement and image compositing
- Attention to detail to ensure a natural look

Please provide samples of similar work.