Stuck bolts on front hub assembly

I have a noisy right front wheel bearing on my daughter's 2001 Aurora. I'm trying to remove the old one to replace it but can't budge the three bolts on the back side with an impact wrench set to 120 PSI. I'm afraid I might snap a bolt. I'm getting ready to try penetrating lubricant.

Any other suggestions or experience with this?

I recently helped my friend replace the clutch in his 89 323 (15 years old). I felt like a :loser: But, getting back to your question, we used a 3-4 foot metal fence pole that we slid over a socket wrench to pry the bolts loose. The longer handle lets you apply more torque to the bolt.
Hope this helps. Good Luck.