I have an wide experience on working on Google Apps and its integration with CPanel.
My own email address is being maintained by Google apps, PM me to get the details as Freelancer strip the email addresses.
Could you please let me know whether you want a free (NGO, Education) plan which give 10 free email address for life time or paid plans? also which hosting are you using?
Please PM me so that we can discuss on more details, I would be happy to help.