Make each Pro-Sites new created blog premium?

Is there a way to make every newly made blog start off in premium instead of basic?

Even with only one level made Premium, I have to manually upgrade each newly made blog or user has to upgrade and pay.
And yes this was unselected:
Allow Free Signup (* Signup on Checkout) - which allows members to sign up free to standard non-pro blog. *** I need them to sign up to pro only***

Can I make this static premium somehow?

Please,

Kindly,

Paul