With this type of design, there is a decent amount of extension at the front, which would in fact increase downforce as a splitter would.
Canards are also absolutely an option, as long as the interest is there. Similar urethane pieces we've done with the GT-R were very effective on our race car. And urethane is extremely durable, the original lip spoiler and canards we put on our GT-R survived the entire Targa Newfoundland Rally just fine, slamming all over the place. Fiberglass or carbon fiber would never have been close to lasting.
