Going wood elf, 3 levels of Scout gets me 2 expertise of my choice + double proficiency to survival and nature checks expertise, 2d6 sneak attack, and cunning action (bonus action to hide in very little naturalv environment due to wood elf). 6 levels of Monk gets ki empowered strikes at level 6, unarmored defense (a big one for the character concept), martial arts, slow fall, and extra attack.
Flip the script 5 rogue 2 monk gets an added uncanny dodge to the scout/rogue side, a couple uses of Ki if needed, and a larger sneak attack (3d6 I think) while still retaining the unarmored defense and martial arts.
To be honest, I am not sure if I would prefer to focus more on ranged or melee, but I like having the choice of both. I am also not sure which way I would go as I would not take both classes to level 7 because both classes get evasion at level 7. That would depend on the story and choices the character makes.
The concept I am running with is a character that relies on very little. Material things are not a concern unless they are used in survivability. This is not a character that will "horde" treasures, gold, or wealth. He isn't going to just give it all away frivolously either though. Magic items that help him are something he would certainly keep around, but he won't keep something "just because".
If you think making a single class that can encompass these things to start with is a better idea, I am certainly willing to see what you would have in mind. I have played around with combining some things, but I think I might be biased or create something a little too OP.
I have even toyed with the idea of going Monk 1/Rogue Scout X to play a scout that doesn't need armor. These are really neat rolls and something that uses more attributes is awesome (like unarmored defense).