I really wouldn't recomend either. An L5 or two CVR's is quite comparible in SPL. However, either set up requires an abundance of power that the sub channel on a Kicker 5ch amp won't provide.
If you want two CVR's or one Solobaric, get a bigger amp for the sub(s). Personally, I would run one CVR off the sub channel and be done with it. You'd be suprised how much bass you can get with one properly powered sub. Most kids are disapointed by a lack of bass, because they don't have enough power going to a pair of beefy (and inefficient) subs.
BTW, nice selections. I have been a dealer of all the aforementioned for over a decade and would highly recomend all that stuff