I highly doubt you will need to do any electrical upgrade with the Pioneer, I run 2 amps and a processor and have never had any lights dim. Don't forget you will not have the Pioneer gain all the way up, so while it can go down to 1 ohm and put out a lot of power, you are likely to be in either 4 or 2 ohm and have the gains down. Even at 4ohm you will only have the gain at about 50% for it not to destroy your sub.

If you are looking at upgrading the other speakers and running them on the other 2 channels, then that is about the only point I would consider the Kicker.