I've heard from some callers on Jim Hacking show USCIS sent them RFE despite providing everything they had. Then the callers didn't know what else to send. There's a school of thought saying you can file the strongest case and then not submit anything else. If USCIS RFE, then you can confidently reply with 1 year or more of new evidence.
If you already sent new evidence, they can approve it without asking for anything else, or they can be sneaky and still issue RFE to which you'd have to reply.
If I was you, I'd keep some evidence up my sleeve.