5 flat or 5 wingback? If it's wingback I have a very similar rivalry and have upset that team two times out of three using 4-5V-1. If flat and you hate three defender formation like me, use a 4-3W-2-1 (ML-MC-MR, AMC-AMC) with a blue defense arrow on the MC and neutral everywhere else (3-5-2 would work fine though).