Comprehensive logging for Peercoin full nodes?

I’m opening this thread here in hopes that I can hit two birds with one stone.
This topic is to address ways to expand/improve/augment/etc comprehensive logging for Peercoin full nodes.
The two apps I have in mind are obviously Peerunity and Peerbox.
I am running both on a Pi. With Peerunity, I am logging uptime and data traffic on Raspbian via vnstat and uptimed.
What I would also like to monitor is the number of peer connections.

So, logging traffic, number of connected peers. How can this functionality be achieved on both Peerunity and Peerbox?
Can vnstat and uptimed be installed and ran safely on Peerbox, or will it break some functionality?
What about logging connected peers?