Hi BJ,
I think the appropriate question to ask yourself is “What are my website’s needs?” and not “Which plugins are built specifically for a multisite WP install?”
If you believe you’ll need a network of blogs or subsites, then a multisite WP install would be appropriate.
For that reason, the multisite plugins that CBOX utilizes are blog-specific:
* More Privacy Options – Adds additional blog privacy options for your users.
* BP MPO Activity Filter – a plugin to keep private blog content out of public activity feeds
* BP Groupblog – Enables a BuddyPress group to be associated with a multisite blog.
You are always welcome to install a multisite install of WP locally to evaluate if you need network functionality.
Hope that helps! Let me know if you have any other questions.