Yes, the kicker speakers will fit all the way around. The only reason I didn't use the kicker speakers was because speakers, in a perfect world, should all be matched. Mixing speaker manufacturers for certain applications will make the audio sound... wrong... for a better lack of words.
That and i'm totally ocd about things being symmetrical. Little did i realize at the time though, was I was on a effing motorcycle. The details in the audio would have been lost because of just that. So now I have to come up with some way to shield the speakers that are coming into the trunk due to the sheer size of the magnets.
For the record, I went with db651's up front (6.5"), and db521's (5.25")in the trunk powered by rf at first, then trhough a couple other amps, and eventually landed on the soundstream pn4.320d amp. Why so many amps? That's a long story.