The 1+ isn’t a 1rm week. 95% of 90% of your max is ~85% of your true 1rm, which is a weight you should be able to do for 5-8 (maybe more, if you’re feeling really good that day) reps in an all-out set. The cool thing about 5/3/1 is that there’s many different templates for different styles, goals, etc. If you want more volume, the first thing that comes to mind is BBB (boring but big, big but boring? I can never remember). You can’t go wrong using anything made by JW.