Main site as multi site needs Pro Level, but to hide level?

I haven’t quite figured out how I can build out the main site of a multisite install to make use of the highest level in Prosites, but I also do not wish to show this level in upgrades. I am sure I am not making sense on this, But what I have is a blog template set up, prosites set up, and the main domain to be the parent site. When I show the upgrades possible for prosites, it also shows the level with everything turned on that I need to build out the main site.

I would like this somehow turned off. Is that possible?

Possible I am doing this all the wrong way.

Regards,

Ciaran