Well probably, but if the chance comes up to replace the whole bumper, I'd be all over it (with a reasonable price of course).
The current bumper clearly has had quite a lot of damage from the previous owner; the bumper itself isn't straight, a lot of the mounting points are broken, mismatched respray, paint runs. Even the left hand headlight assembly is cracked around the black plastic under the housing.
Considering your suggestion, I'll probably have a look at getting some quotes for plastic wielding. Think it's possible?

- WP_20150130_13_07_19_Pro_lodef.jpg (201.9 KiB) Viewed 1130 times
As you can see, it's right on the edge of the bumper, so i'm not sure how effective plastic wielding might be.