This is an excellent suggestion, but be mindful that suse is an RPM-based distribution and upgrades will necessarily install slower than other formats. If that's not a problem (just run updates via cron) then it's fine.
Pacman is not a good package manager; if something goes wrong during the install it can leave your system in an unstable state. A better package manager would be one that has transactional updates.
Why's the bastard got a donk though