@zachansen8293

There is a solution that I thought of later that gets you the same setup but requires more configuration of each train -- you can put each resource on freight stations on each station and then rotate it.   So 1-2-3-4 then 2-3-4-1 then 3-4-1-2 then 4-1-2-3 and then you have the train specify which things it picks up at each station in the timetable per-stop configuration menu (the gear when you hover the stop).   But you have to be really careful when doing this.   But it also lets you pick up multiple things in one stop if they happen to line up right.   And if they don't you can still perfectly customize your train.   

What you can't do is have the same resource in two position at one station.

@zachansen8293

If anyone actually sees this and wants a tutorial on how to build this I can put something together.   But basically you want the foundation to be 6 wide (24m)   and 24m vertical between each (just slightly more than the height of the train station).   And then you want a "skip 1" vertical spiral.   I showed a "skip 2" in my spiral tutorial but you can use the same blueprint, just don't "skip 2" between each, just "skip 1"