Lucia AND Yuri2 together sound a poor idea. He gets the spells Lucia does and more, and you want more bang for your buck even if you're using a Light. Redundancy isn't good. Not to mention that Status Symbol Law would be bad for Yuri, he'd become below average speed (Lucia herself would become rather problematically frail and she's already below average speed, this would make her even easier to outspeed. She'd also lose resources, etc... just not something I'd do).
Also, that team really doesn't like the idea of Status Law. Outside Lenneth, all the party members have statistical problems. If you pick that sealstone, Meru will a) become easier to outspeed and b) OHKOed by average to below physicals. She'll turn into a 0.5 liability. Sharanda will have similar issues, with the added problem of risking not being even above average speed anymore. Speed-wise, Maria won't be affected, but you don't want her getting -frailer-, and Mia herself is already slow and frail until floor 5 (where she may become averagish speed and frail). That team won't make waves because of how poorly off its stats pan out and how Status Law both mitigates what good stats they have and exacerbates the ones that fail. Lenneth is a pretty good Status Law pick, but it doesn't matter when the rest of the team is riddled with some of the worst picks ever for it.