I posted some time ago that I had found ways to make CAWs shorter than 5'3" and taller than 7'2". Well, I found a way to increase the height range even further.
The shortest CAW I can possibly make is a diva-template 4'5".
The tallest I can make a CAW is possibly 8'11"(!).
I arrived at these numbers through extensive research, and the knowledge that Rey Mysterio is set at an actual 5'6" in-game (his model in the CAW suite is 5'6"), and Big Show's model is set at exactly 7' tall (his real-life height).
A completely unaltered "raw" male superstar is actually barely taller than Rey Mysterio, despite being listed at 6'4". You only need to drop him to about 5'10" to be even with Mysterio (5'6"). Thus, it takes some work to build a CAW which appears to be at his actual height as listed in the creation suite.
It's easier just to add/subtract inches, using Mysterio and Show as guides, to shoot for your intended height.
To make the 4'5" diva, you'll need to make the forehead, neck, chest, abs and legs as short as possible, while maximizing the length (height?) of the head. Then, decrease her overall height to 5'3". You'll notice how much smaller than Mysterio she is, despite being supposedly only 3 inches shorter!
To make the gigantic Goliath wannabe, you'll need to do the above...in reverse. In other words, make the forehead, neck, chest, abs and legs each as long/tall as possible, while minimizing the height of the head. Then...add one of the taller hairstyles or head accessories (such as the giant pink rabbit ears in the "other" menu).