Your lawyer should make that decision. There are two opposing legal schools of thought:
1. Never overdocument - it raises suspicions. So some lawyers prefer a reactive approach
2. Head off a pending question, if you send all AC21 docs now, then your case can get approved without an RFE being necessary, this is the proactive approach
FYI - my lawyer went with #1 and if, even by mistake, my I-140 was to be cancelled that would have meant the end of the road for me. on the other hand, the Yates memo seems to clearly encourage #2 so ....There is no right or wrong way so let your lawyer choose the approach (s)he feels comfortable with.