Dark JEDI,
Instead of this
hdragc(max_sat=1.0,coef_gain=0.3,min_gain=0.5,max_gain=1.5,protect=1,reducer=1)
You could try something like this and then tweak it up or down til you find what you want.
hdragc(max_sat=1.0,coef_gain=0.1,min_gain=0.1,max_gain=0.3,protect=1,reducer=1)
**EDIT**
These settings are really not so great for the HDR filter. I didn't know much about HDRAGC when i posted this. The settings for HDRAGC in the updated script are much better.