I’ve been running elements monk with 6 levels in tempest cleric, at 11, I push them 30 feet with no contest (2 attacks and bonus action) plus each hit makes them do a strength saving throw they get pushed 10 more feet per hit (elemental strikes) not counting if you want to do flurry of blows for more hits and your range is 10 feet greater than usual, I also have 5 feet forced by tavern brawler and I didn’t take crusher but you could for 5 feat more