Yes, get rid of that plastic fan.

A "216" fan would be my choice. I them on both of my cars and they cool well in traffic at idle. I also have R134 AC and the 216 fan and shroud pulls enough air at idle to make my AC work at idle when it's hot and the clutch is locked up. You can actually hear the fan when the clutch is locked up.

Great setup IMO, way better than a plastic flex fan.