You would need to remove the Solid Boosters first to make it worth it. If you do that hydrogen becomes a bad choice. So you should have built an RP-1 or Methan

You would need to remove the Solid Boosters first to make it worth it. If you do that hydrogen becomes a bad choice. So you should have built an RP-1 or Methane single booster without solids and then you could have done it.