Run a cPAddon automatically on account creation?

I am working on writing my own system to automatically provision cPanel accounts upon payment.
One of my requirements is to automatically install WordPress on certain Accounts.
What would be the easiest way to do this?
My preferred scripting language is PHP...
I have the WordPress cPAddon installed on my server and I figured it may be the easiest way to do it if it is possible to invoke them via php.

Thanks in Advance

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