monitoring the F5 SNMP tables

I have utilized two open source projects to achieve most of what you are looking for. I use cacti to graph the performance & trend data, and I have used Nagios (at previous employment) to send emails/pages on important state changes. In cacti, the virtual server snmp table is indexed automatically, so I don't have to do the manual oid plugging to get the desired end result. I am trying to accomplish this with the pool table, but my oids get expressed with a double dot in the middle, so I haven't quite figured out the regex for that table. If you decide to pursue the Cacti path, I can shoot you some screenshots as well as the F5 template I customized for the cacti forums. I could probably put a page together for the wiki as well and post the templates & screenshots there if anyone thinks that would be helpful.