Here's one of the better improvements you'll get then
(also make sure you have 2 empowered solars(starlord) : Get advanced interface options addon and set your custom lag tolerance at 3-400, voilá - you're now casting 2x wraths instead of a lunar.
Whispers SHOULD be better than plaguehive but might come down to you static haste being too low to use it atm then. although if you're currently only weaving with a lunar it should def win over plaguehive.
If you run BotA and NB with that lag tolerance setting you'll most often have to move for some mechanic b4 actually running out of AP to chain starsurges =D