Hi,
I have done many whmcs setups for my clients over the time, I have very good experience working with whmcs and as a php developer i have also worked on many whmcs customization jobs.
Regarding the configuration of 8 cpanel servers, I can do that but you need to understand that configuring all servers and hosting plans to work with whmcs script will take some time thats why my bid is for 3 days and surely this job can not be done within a day.
I have previous experience of such jobs and based on my experience i have placed the bid, but even though if you have any query please feel free to contact me we can discuss the requirement and proceed accordingly. I will also update my bid accordingly after discussion.
Looking forward to hear from you soon.
Thanks