How can i intergrate already theme and plugin for user's site?

I have a network site . i set login user can create their site . my question is :

How can i intergrate some package which have already theme and plugin which allow login users can chose and active them :

+ Package A : theme A + Plugin A1 + PLugin A2 +......
+ package B : theme B + plugin B1 + plugin B2 +....

With those package , my login user can create their site on sign up front end page and chose package( already theme and plugin ) to active , they don't need active plugin in their wp-admin dashboard .

Thanks .