Sorry, I don't know anything about the Cheoy Lee. Just a big believer in learning on small boats easily trailor able. My first boat was 13 1/2 ft. Great for beginners, yes you may outgrow fairly soon but as stated above, you shouldn't loose any money on it. As for the Portuguese sub "fleet" I wouldn't bother your brother with it, a pontoon boat and a couple of beer cans would probably do the trick!
Maxum 3200 Miss Adventure
Formerly - Tartan 34C Yawl