Welcome PM .... when you decide to build there is nothing but decisions that you get to make about your boat .... and have to live with after it's built. Selecting the wood is one of the first decisions and it is pretty important.
If you need to carry this boat, then think about the lightest wood you can reasonably get. My first build had me looking all over for "clear" lumber that cost a fortune and took forever to find ... I sweated any knots etc .... I was very particular. Don't get me wrong, clear wood is beautiful, but I find a few knots add some texture and character to the stripping.
If the idea of texture sort of appeals, then it opens up the search and makes getting the lumber a lot easier. Like ScouterG suggested, cedar deck planking is an option, select the boards with the right grain orientation, they don't have to be perfectly straight .... use the skilsaw method for cutting strips (that allows for lumber that isn't perfectly straight and is the efficient way to cut strips IMO). If you want to use any knots that are present, just stabilize them with epoxy, before you cut strips (tape below, lets epoxy soak in ..locks them in place), this also increase the number of useable strips per board.
Use the table saw to adjust the width as required or just do that with the router setup when you bead & cove.
Like I said, if weight is of any concern, this is the first and most important decision that affects the boats final weight.
Brian