Hextall,
You will love that toon it is a sweet boat. I use a twelve pound pyramid on that same boat and at times i think it is too light to keep you stationary in some types of moving water so going a bit bigger might not be a bad idea. Also i think that a chain anchor could be nice since controling your drift is more usefull at times. rember you should always have a good sharp knife with you when ever using any type of anchor in moving water and dont tie a knot at the end of your anchor line.