Thats pretty much how it goes. You can use Redoubt as a que, since it only tiggers after a crit.
You generelly just want to stay alive as long as you need for your bomb too build up. What i
used to do whas to use a 1h and shield. Than switch to a 2h before delivering the pain.
If you use it in combination with SOC youll have a chance of even more extra attacks.

For addons, try these. The first one is based on the rogue combo point system. The other one is a standalone.
I cant say for sure if they work on this server, since i havent tried it out for myself. Keep us informed.
http://wow.curseforge.com/addons/project-1050/http://wow.curseforge.com/addons/project-1032/You also might want to open the .toc files in the addon folders and change the ##Interface version to 11200