Sync specific services in specific conditions?

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http://androidforums.com – Hi everyone, I have searched a lot and can't find any answer so I'm risking this post. Btw I'm french so excuse my English. I'm on a limited data plan, and I don't have Wifi at work. I want to sync exclusively my google calendar (used alot for job) when i'm on data connection (4g), but I want to sync all google services and other apps when on connected on Wifi at home. I currently use Autosync(free) to put on auto-sync on or off according to wifi connection. Thing is, even with the paid version I can't seem to specify exclusions, ie letting the calendar sync alone even when not on Wifi (General)