Re: This could be challenging even for Pros
Welcome to Retouch Pro !
Actually, the image should not be too difficult. If you are willing to work on it, I think you will get excellent advise here. If you are not wishing to do the work, you should also get many offers to do it.
If you decide to give it a try, there are many methods to gain support. Ask specific questions about a particular problem. Avoid asking large open ended questions. Post a small thumbnail here to illustrate your issue, but include a link to a higher resolution image on an external site. In lieu of the external link, you can also post a cropped section of the image here as a thumbnail. That way you can retain the higher resolution and remain under the 100K file size limit (or join and be able to post 200K).
With regard to the image, the contrast is already very good. It looks like it will take a lot of cloning & healing. That process is a bit slow and boring, so plan accordingly. But overall, it is not an overly difficult project - just slow.