I would pick 2 good exercies like barbell curls and hammer curls, then pick a set/rep range, the sets and reps are not important in terms of "whats better? 3x10, 4x8, 3x12", the important thing is to use a constant set/rep range so that training is quantifiable and you have a guage to measure progress. So, for example, if you curl 3 sets of 12 with 55lbs on week 1, then on week 5 you curl 3 sets of 12 with 70lbs, you clearly made progress, and if you're eating according to whatever goals you have, then you'll obviously like what you see. I find when people get too crazy and complicated and just try to 'get sore', they do a bunch of stuff, but never really make much progress on any of it. When you stall/slow down/get stagnant, change something or make a tweak, do dumbell curls instead of barbell or reverse curls instead of hammer curls, or pick a new set/rep scheme to progress with.
You have a great weekend too, it is supposed to be in the 90's where I am as well.