It's also wise for me to point out that most cpanels can also be intensive on your server

...
Simply put, tell them you want a vps (or dedicated server) with CentOS (if it's available, if not Fedora) and that you'll have someone else do your migrations and configuration. Also ask if they'll install Webmin for you, if not I can do it, it's nothing that big...
You should try out a webmin demo, it's fairly easy to use

... Ive been using it for a while; it dumbs down most linux tasks.