Wear all of it if you want to and then some. I'm getting older, in the past couple years I just finally began implementing some protective equipment and it has helped immensely. 5mm Knee sleeves ain't much but it shuts down knee aches for me, wrist wraps for heavy pressing are basically mandatory, straps for deadlifting or pulling movements are wonderful if you're not worried about powerlifting, I've gone further and picked up a light pair of squat briefs as well which add compression and support to the hips and slightly the low back, I can squat for days with those things on. The longer I do this and the more nagging aches I acquire, the more I understand the mentality of the guys in equipped lifting- Someday, I will be in full equipped gear as well for my lifts. Injury prevention = longevity = more gains over time which I can't argue with.
I personally recommend the basic three (sleeves, wraps, straps) and a belt of course, but if you feel like spending a little bit more pick up a pair of Spud Gateway Briefs or Mark Bell Slingshot Briefs for more hip health.