Your question is not a simple one. It could certainly open the door to other questions. However, a motion hearing is different than a trial and issues such as hearsay are more relaxed at a suppression hearing than at a trial. You definitely need to talk to an attorney about the pros and cons of using the witness statements. There may be other ways to get evidence in without compromising your case, but again that is something you should discuss with an attorney in person.
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A trial and a suppression hearing whether it be a motion to suppress evidence or statements are two separate matters. To give you a really short answer. Asking the officer about the statement will open the door for the prosecution to ask about the statements. It seems though you are trying to offer the statement as impeachment evidence which is different than introducing a statement as substantive evidence. In the long run, the evidence will likely come in when the prosecution calls the officer in their case in chief.
Since hearsay is admissible in a suppression hearing, you could confront him with the statements; although calling the witnesses to testify would be a better practice.
However, the statements would not be admissible as substantive evidence at a trial; as hearsay generally is inadmissible then.