Without checking the build too much you have.
12nf
4 qual lam cloak
15 artifact bonus aug
17 enhancement lam aug
8 insightful AE best bear ring I think.
5 DS feat
2 Chaos feat
9 DS EPL- you are considering not taking.
6 Asamir
4 Astral - prob not taking?
am I missing something?
Most builds have access to 5-10, maybe 13-16 in trees, some have only VKF as an option, and 3-9 from fury, 6 from LD, 5 from SD/GM so maybe 20 from ED? If you can make up the 7-15 in trees/fili, you can ditch the EPL, if you care about hitting 100DS. You can Get some from filli too, that wont feel too bad, like 2-7, 3p Shattered Device 3%, maybe more like from 2p Soulweaver/Splendid Cacophony: Constitution 2% or worse 2p Celerity: Reflex or Dodge for 2%.
My shallow exp with bear builds is 100DS is super important to the already slow feeling but big number style DPS. Also, the fort prob doesn't matter for what the bear is really good at anyways imo, which is reaping and r1 or lower raiding, not that you couldn't build it too push, I guess, but Bear so fun at stomping out some r10s tho.