Your boat may weigh a lot more or even less. What I have provided here is just a guide. The finished weight is up to you. F or planking you can use western red cedar, redwood, basswood, white cedar, Spanish cedar, sugar pine, white pine or sitka spruce. I have used all successfully.
Weights vary depending upon where the wood came from and how dry it is.
Depending upon where you live these woods can be either cheap or unbelievably expensive. I have built boats using balsa wood and it worked quite nicely so you can use your imagination to some extent. Keep in mind that what ever you use must be dry, dry, dry. I use System Three clear coat for laminating and then fill with regular resin. Using these materials and western red cedar I build 26' North Canoes that weigh 180 pounds and are durable enough for serious racing and camp use.