Ok, cool.
Half-elf isn't too shabby either. 6 Str, 16 Dex, 16 Con, 17 Int (+1), 12 Wis (+1), 12 Char (+2). Add two points to Int at your 4th level for a nice 19, but it's still an odd number. Choosing the Observant feat (+1 Int, so 18 Int) instead doesn't actually make you lose anything, and really makes up for crappy Wis at 4th level for any passive perception checks you need to make. Or you could throw that odd point into Str for a tiny bit more carry capacity. Or throw it at Con with the thought of taking the Resilience (Con) or Warcaster feat at 8th-12th level. But I'd go Observant at 4th, and +2 Int at 8th as the best levelling option.
You can skill out if you'd like for stealth (or just grab it from background), take elf weapons (you're a pretty reasonable archer), grab a wizard cantrip to round out character design, or grab Mask of the Wild for alternate stealth options.
Quite durable, can handle dex weapons a bit, good saves for when you change out your Wis proficiency for Dex or Con, and plenty of Int for all the mystical goodness.
Your strength might suck, but you're a pretty well rounded character. Half-elf heritage explains the petty lords' hate of you, having a wizard cantrip is handy, and the character seems pretty playable with that stat array. Not great Wis, but not too terrible with Observant either (passive perception is about all you'll use it for anyway). You can do a lot of Mystic-talky later on, or even just take the Friends cantrip, so low charisma isn't really a problem for you. Lots of options, and they all fit what you've described, all with nice stats to use them with.
I'd still be tempted to go Immortal w/Iron Durabilility, Bestial Form, Nomadic Mind and Psychic Phantoms. Probably with Blind Spot and Energy Beam as talents.
It's a little combat focused, but you'll get another discipline at 5th if you really want something else to do. 17AC without armour when focused on Iron Durability (can boost it a bit when needed), 4 tempHP a turn, and you just talent blast and Distracting Figment all the things when damage is needed (or fire a crossbow at it or use a vs-AC wizard cantrip if you chose one).
There's plenty of other good disciplines, but at lvl4, this is probably all you'll need for RP and to survive fairly easily. At 5th, you can grab something far nicer.