There are rules for submitting evidence. First, you do not admit the exhibits into evidence but rather offer them, and the judge makes that call. I would highly recommend that you make three exact sets. One for you, opposing counsel and the record via the Judge. I would have a cover page and each page numbered. If you are using excerpts from a trial you must include the certification page at the end of the transcript. If you are subpoenaing a third party ensure that the custodian of records provides an affidavit.
I'm a pro se litigant and never had problems offering my exhibits into evidence. If opposing counsel objects be prepared to provide a quick supporting argument.
You may also want to file a subpoena duces tecum with an attachment seeking records. If the documents are not provided, well, that's contempt and bodes well for you.