The only toughest fight left in 130 is only Berchelt. Other champions have no chance against Loma. I don't know if the likes of Santa Cruz or Valdez wants to fight Loma in 130. They even ducked GRJ.
First beat the winner of Commey vs Lopez for all the belts then go back down to 130, which is his division imo. Maybe take out Davis along the way.