chronicle set help

so i have no idea of the end game content or if this is even end game content, but in the legendary event i can pick a chronicle acc set and armor set. the thing is im not sure which one should i pick. i am a Berserker lv 75(about to do 2nd awakening), which acc set and armor set would be the best choice? O.o

im talking about the chronicle sets that you can obtain through doing dungeons(100 dungeons for acc set and 150 dungeons for armor set) in the event