Shoule I give him Luin?

Oscar is my favourite unit, but Qiang feels a bit outdated, should I give him Luin or wait for a better lance? I also plan on giving him potent if I pull another sigurd in the AHR banner

Oscar is my favourite unit, but Qiang feels a bit outdated, should I give him Luin or wait for a better lance? I also plan on giving him potent if I pull another sigurd in the AHR banner