Think I may try that three heavy set short rest period fourth high rep set kick your ass workout. After I do weighted pullups 
I tend to get a better bicep workout if its not after my back workout because I can curl a lot more weight. Even though I do back and biās Iāll switch things around ie, back and shoulders, biās and triās, chest and biās, or whatever, Iāll mix up my routine every so often to shock the muscle.