I need colours changed, sizes edited and backgrounds removed of product images

I manage the website of a sofa company. I have photos of some products that we sell, but not all.

I need someone to change the colours of the sofas, so if for example I only have photos of a certain model in black, they would be changed to brown and cream.

Some sofas I only have photos of 2 seaters, even though we sell 3 seaters and armchairs (1 seaters) of the same model as well, so I would require the photos to be manipulated and seats added or taken out, whilst keeping the photos looking natural.

Other photos will need to have the backgrounds around the sofas taken out and a slight shading effect added.

I am looking to get the work started within the next few days, as soon as possible really, and finished within a few days of starting.

I would need about 26 photos to be delivered, with the possibility of more work later on when we stock more products.

I've attached a few examples. The first two are of the same sofa in different colours with shadings. The third is of the same model in different sizes and combined in one image.

I estimate the work should take no longer than 15 minutes per image, on a basis of £25 per hour.

I look forward to hearing from anyone who is interested in taking this job.

Thank you.