1. On the NPM Webpage go to Admin > License Details
2. I'm not understanding this one. Did you configure both NICs with an IP at some point? Why are you using two NICs?
3. We have NPM & NCM running on the same box and only use the NPM Syslog server. I don't think there is a benefit to use one over the other. I'm not 100% if you can see the NCM syslog within NPM though. Maybe someone else can confirm.
4. Did you install the NCM Integration pack? That is what integrates the two. If not, you can get it through your Customer Portal > Downloads.
#1 - DirtySouth is correct here for NPM
#2 - Would like to see your answer to DirtySouth's question
#3 - From a scale stand point no, but the Kiwi Syslog has some additional filtering, archiving, etc. functionality that Orion does not have
#4 - DirthSouth is correct here as well