I used that for testing for a while, it's a fun setup. You can very easily get so tanky (ESPECIALLY if you partner with Sarah or Celica) that you can just brainlessly clear stuff, it's very funny.
It has really good synergy with squishy party members who need protection (ex. Maya) too.
Beyond that, some magic can help, full paladin vibes, though you start running out of stats fast if you try to do anything more than STR/MAG/VIT. 5-10 points in magic can give some nice channels tho, and a bit of focus can help sustain them.