Paladin Feats

since Paladin spells, save for like one or two, are all freaking concentration it seems like it would be a good idea to gain the War Caster Feat to gain advantage to maintain the concentration. With that said, would it be also advantageous to also gain the Resilent Feat to get proficiency bonus in Con Saves or would the CHA bonus with Aura of Protection be more then enough, especially with War Caster Advantage?