The Capri will crush the other 2 in light air, sailed properly. As soon as it's over say 8-10 knots true, the J will lead until things start to really heat up. Then its the Merit.
IF there is any wave action at all, the Capri will be dead last.
Or you can buy an S2 7.9 and crush them all (same rating).
Oh and you run your halyards back to the cockpit, so no reason to go forward, except to change headsails, which you should do often on the Capri 25 (masthead).