I'd probably go mini cabin, but it's a tossup. Also depends if you plan to sleep whole time or monkey around for a while. That flight takes off daytime and for the similar routings to North America (daytime takeoff / morning land), I struggle to sleep. So when I intend to work a lot on the flight, I stay near the front like 12K inc. most short hauls and similarly timed long hauls. Faster service for coffee etc. If I want to conk out I go for a quieter seat not the front. Although overall I find pax on CX to be quite respectful and it's more mental than real. I find people playing stuff on their phones without headphones far more annoying than foot traffic and you can't pick a seat to avoid that. (I always say something to crew if it persists).

With good crew and well behaved PEY pax mini cabin good also. But occasionally, less common but happens, it turns into PEY lav until crew stops it. They're generally good about ending it if you complain.