Yeah, you can cheat in the race, y'know (fairly easy, not too time consuming 20 pts)? Or you can just thrash on Gato for 15 pts...but w/e...Just do that, Crono's the best for most of the important stats.
Personally, I'd ditch Magus and put in Lucca...maybe Ayla if you simply refuse to get Crono, the best character in the game. Then feed them Magic Tabs (use Ayla in this case to Charm if you don't have very many). That's basically your best bet. While Magus has a nice wide-range of Magics, most of them are low-level, and even his best single tech Dark Matter is only fourth in best single multiple target Magic tech (behind Crono, Lucca & Robo, respectively)...but use who you want, Magus has some of the best quotes. ^_^ But I assume this is a first try since you're giving all those stats & such (people who've played it pretty much know how unnecessary that is for CT, I think). So there ya go! Oh, and I see Triple & Double techs as a waste of time. Especially when you've got Robo who doesn't need to team up with anyone to heal the whole party, if necessary.