I would actually spring for the competition KBs.
If you think you're going to be doing long sets and progressing to heavier bells, the uniform handle and uniform size of the 'bell itself will ensure proper and consistent technique as you progress.
Perform Better runs deals all the time. I think they are either having a sale or will be having one soon.
I wouldn't go through the AKC for the KBs. They were definitely more expensive last time I checked.
Muscle Driver is also a good place to check out for GS style KBs
And if you don't think kettleball squat cleans are difficult, I say, step up to the med-ball
- CJ Kim