Pay To Blog & Supporter ?

Hi,

I am trying to solve this problem for two weeks already and now I need your choise:

I'd like my users to pay for creating blog at very beginning - during registration.. I am going to create different packages with Supporter (3.0) plugin.

Creating blog will be free, creating pro blog will be in same way (if user wants - (s)he can upgrade with Supporter) and second package will let users create e-Shops as second package will contain MarketPress plugin and themes for e-Shop. So, blog will be free and if user wants (s)he will upgrade it (as standard) and e-Shop will be paid and user should pay for it during registration (not with Supporter, when (s)he wants). This happens with Pay To Blog I know, but how to use both - Supporter and Pay To Blog?

Are any issues there?

Thanks