Breath weapons are a line of acid and a cone of Slowing gas. It's not bad, but when most other metallic dragons have save-or-lose breath weapons it's a bit underwhelming. Skills are Bluff (Still useful), Hide (Why no Move Silently? At least the wyrmling is tiny), and Jump (Why. Did. People. Think. Dragons. Needed. This).
A small bonus to all stats except strength and dexterity, Tiny size, a crappy breath weapon, a slightly less crappy breath weapon, immunity to a relatively uncommon damage type, and (wait for it...) Spider Climb. Not actual Spider Climb, because that's obviously far too strong on a flying ECL 5 creature, but a version that only works on stony surfaces. The -0 LA is strong in this one.
Tiny ---> Small size. +2 strength. 2d4 extra damage on the acid breath weapon (you know, the one you won't use). +2 effective AC. I'm not sure I'd take this if a single dragon HD came with it: let alone three. -0 LA.
No medium size until the second half of one's adventuring career? Check.
A breath weapon outdamaged by Fiery Burst? Check.
Horribly late sorcerer casting? Check.
-0 LA? Check.
And so on...
THERE ARE NO AGE CATEGORIES BEYOND THIS POINT, GOOD CITIZEN. PLEASE CONTINUE YOUR BROWSING.
Two more... I can do this... I can do this...