Go with the Lee set that includes the collet, or get someone's full length die set and a neck sizer. Or, do what many do, i.e. adjust the sizing die to only do the neck. There will still be some work further down on the case, but not as much as full length sizing. Neck sizing is great due to less work on the brass. However, at some point, maybe after firing 3 - 6 times, the brass will no longer chamber. At that point, you need to full length size.
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