Protector or thaumaturge- Light Cleric

As a blaster, I see the benefit of being dexterous and moving in the mid ranks to help support the party, but I also see the benefit of heavy armor, especially at the beginning, with warding flare and tanking some hits and the added bonus to not breaking concentration What do you recommend for this?

I plan on being a hill dwarf with a hot temper and a background similar to Brokkr from Norse mythology