I pretty much use loadmarker/droppoint, perhaps a cue at a point where I have 4 bars before the vocals start (especially in tracks with long intro’s), maybe a fade-out point (but only if I imagine using the track in autoplay mode). I don’t see the use of setting a cue point a minute before the end, unless you intend to hot cue to it to make a very long track a bit shorter. If it’s a song with a short outro, or a better mix point earlier in the track, I might set a loop there (so I have more time to make a longer mix).
I use Cross, so I can name the cuepoints, which helps keeping things clear. Not sure if you can in Traktor. But I try to keep it to a maximum of 4 cue points/loops per track.
Just my € 2,34.
Greetinx.