If you decide on a strip built kayak, there are a couple of ways of keeping the cost of the timber down if you have access to some woodworking equipment.
Old recycled skirting boards were often WRC. I used them successfully for the deck of one kayak.
Paulownia is a good alternative to WRC, a paler colour, but lighter and good to work.
My first two strip built kayaks were built from WRC offcuts that the timberyard would normally have tossed out. It cost me $100 for enough for two kayaks 6 years ago. I had expected to pay $300 to $400 for WRC at that time.

Or if you decide to buy a kit with everything you need for either S&G or strip,there is a place in Queanbeyan sells kits.

Capeboatworks
Unit 5 - 48 Aurora Avenue
Queanbeyan NSW 2620

Phone: 02 - 6297 8009
Email: info@capeboatworks.com.au
www.capeboatworks.com.au