I would shy away from both.
The Rebel is a 5th line in that year. Having the loaded 5th line bar is super safe, but a pain if you don't know how to set the "loaded 5th" line to shape the kite. And at this age, it could be way out of tune.
The Switchblade was a pretty solid kite on a 4line bar. But the CL release was a nightmare to put back together that year. Think box of Legos and Duplos mixed together. You can tell which is which, but you are always tempted to try to use a Duplo to save a bunch of Legos but it never works out.
And from the Duplo website "The fun never stops with these colorful LEGO® DUPLO® bricks! Just change that to 'The fun never stops trying to put together an old Cabrinha release while your kite is rolling around in the waves'.
They had contest putting together the Cabrinha release back in the day. Watch this vid.
Notice the second kid has a spare Cabby release that he has to always have in his hands even after he has finished putting the first one together.
I also heard about a guy that had the Cabrinha release come alive on him and turn into a little transformer, then took a leak on the guy's kite (robot oil) and then ran down the beach and got away from the kiter. That is the only time I ever lent a bar to someone - the guy that told me this happened to him while I was up at my car getting a smaller kite. I did not see this happen, but I believed the guy since there was some oil looking stuff on his kite.
Honestly, this makes me want to buy a Cabby release from that year and try to figure it out. Plus, maybe I could train the little transformer guy to not pee on my kite, but still launch it safely and wait around till I get back and need a land.