Here's what I came up with, may need him tomorrow, since Bilbo is level 6, I made Balin level 7, anything less just doesn't make sense to me. I also used the 15 14 13 12 10 8 (not in that order) starting scores but I subtracted 2 from strength for advanced age. According to my research, he lived to over 250 years old (and apparently used a sword, not an axe). I'm expecting to use Balin as a tag-along / sidekick for flavor rather than let a player upgrade from level 1 hobbit to the one-dwarf wrecking crew below, the company would be quite unbalanced otherwise.
Balin son of Fundin born 2763 in Erebor, prosperous, (home-brew stats based on details from books)
Warden 7, Dwarf (Bitter Exile), saves: str/wis, size:small, speed:25, proficiency +3, 7D10 hit dice, Fierce/Proud
AC:11, HP:67, STR 12+1, DEX 10+0, CON 15+2, INT 8-1, WIS 18+4, CHA 13+1
proficiencies: Mason's Tools (double), Explore, Old Lore, Insight, Investigation, Perception, Hunting, Clarinet, Sword (+7 1d6+6), Great Bow/quiver(+3 1d8 150/600), Shadow-Lore(Orcs), Warded Lands(Rhudaur, Eregion, Cardolan, Arthedain), Weapon-Craft(Sword), Fighting Style(Duelling), Warden Oath(Hunter, Goblin-cleaver, Swift to Fly), Rumor of the Earth, virtue:Prowess, Extra Attack, virtue:Dark for Dark Business