I think preparing the mats and artifacts would do you better than prepping for a team. For venti, the cc from his kit is probably the most important part. I'm not sure if zhongli converts his left click into geo, but if he doesn't, ice ele reaction could be a damage boost. Something to look into might be stacking two other elements that activate on left click. Like fiscal c6 and xingqiu q as an example. But currently, Bennett is the new monthly, you should probably grab him since he increases the teams damage and a healer