Wyatt,
Depends what you want. The Hobie kit has everything all worked out geometry wise, instructions, and all the parts you need. It doesn't offer a pole snuffer system, you have to tramp launch. The 'kit' is several hundred dollars less expensive than if you were to buy all of the parts separately. And you won't have to fabricate anything. I just got done fabricating a spinnaker for the Getaway and it took a while to get everything worked out, build bridles etc.