3X8 is not insufficient, so don't base your purchase on how many speeds there are, but like mentioned above; geometry has changed. You want a more relaxed frame, where older geometry was more aggressive. Stability under loads is important, plus comfort for you.
FS is definitely a handicap, not only for less cargo space, but the additional weight will reduce suspension effect.
If you're not planning on doing gnarley downhills or 3 meter jumps, a moderate hardtail should offer more than enough. Today's market offers bikes leaning towards bikepacking, so do your research.