Fishing for sturgeon out of a kayak is a lot of fun. If you have a heavy duty salmon rod and reel that will work just fine. I often use my Okuma X-HVY, Mag taper 8'6" 20-50lb 1-6oz rod with a Shimano Cardiff on it. That works great for 4oz and below and is OK but less fun with 6oz. My favorite outfit is a Daiwa Saltist 40a mounted on a Lamiglas BFC70H. I also have a Medium action Tiger Stik with a Penn 320. I have caught a bunch of oversized out of my kayak with each of those rods. The Lamiglas is by far my favorite. It is very sensitive and yet really strong. If I was on a budget I would go with a Tiger Stik and Penn 320 combo.
As an FYI, I got the Lamiglas at Dick's in Hillsboro for $129.97 this past December. They still had two left...