I honestly face tanked the four kings. I don't remember my equipment but it was optimized for physical defense and I was probably near your SL. I got right in front of the first guy and just hacked away with a well-upgraded Bastard Sword and didn't bother blocking or dodging. The little swipes they do when you're that close - which appeared to be pretty much the only attack they'll use, as they rarely fire magic when you're that close - did pitiful damage per hit, and I was able to finish off one king just in time to drink an estus flask before the next one was in my face again. Easy.
You can either tank them in full Havels as XGamer549 stated or be a light roll and sneak around them. Each time they swing just roll to the left. Only thing you have to worry about is their AoE attack but it has a large tell you should be able to flip backwards enough.