You might like to adjust the 5 x 5 to Chad Waterburys approach.
Bench press 5×5 = total 25 reps. Pick a weight that you can do for 5-6 reps in good form. Stop each set when your lifting speed slows. Do as many sets as needed to hit the total reps number.
There are other ways to finesse 5 x 5 but Whaterburys is nice and simple.