No big deal:
Install WordPress
Setup ahimsa theme ([login to view URL])
Install Wiki plug-in
Plan, choose and install Backup (whole WordPress incl. Wiki)
Backup has to copy all data (files and SQL) to a local Windows PC and restore them to the web space of a different domain.
Proof WordPress, Wiki and Backup work properly.
We already have cpanel WebSpace and will provide you with log-on data of two domains (second for testing backup).
As Backup is the most tricky part of the task, please be aware that backup has to be part of your task.
If you provide proof you are able to set up a good backup solution, this might help us to decide for you, even if your offer is not the cheapest. ;-)
I look forward to your offer.
Thank you and have d good day.
Peter