Just a quick update:
All is well. For the most part Pandora stays out of Sweet Pea's way, there has been some hissing from SP when they meet each other, but Pandora doesn't respond, so SP goes on her merry way. This is very similar to how Rose reacted to SP when they were first introduced. Puddles, on the other hand, will hiss and growl back at SP, getting SP in an aggressive mood.
Ginger is much too timid to come out of the bedroom, poor Jasper keeps going in there, only to get hissed at so he leaves.
Here is a pic of Jasper and Pandora. Jaspers worse problem is that he has a tendency to get too close for comfort for some kitties.