Don't worry about the smooth swim, you'll catch more fish with the erratic action. Paddling normally doesn't bother the fish at fishing speeds. I've caught fish just a couple of feet under the kayak.
In the spring when I know that I'll only be rigging I use 8' rods.
My set up 90% of the time is two 7' medium rods and two 6'6'' medium lights anywhere from out front to straight off the side.