Just because your client emails you 10-20 statements from everyone on their Christmas card list, as well as dozens of pages of nasty e-mails and text message exchanges with their spouse, or ex-spouse, or their child's other parent, does not mean you have to attach all of them to an affidavit. Judges abhor, and I mean ABHOR, this practice. You are doing your client's case no good.
Motions for summary judgment in MN civil cases have a page limit of 35 pages. We need a similar limit in family motions. It could be a reasonable number like 100 pages, including all attachments. Your motion is not the only one the judge is hearing that date.
In general, mutually-assured total destruction in a nuclear exchange of dozens of nasty affidavits not bearing on the parent-child relationship does nothing but harm your client's case and could result in sanctions.