filter parts

I have question guys is it okay to put 2x Rena xp3 filter on Discus tank? (90 gallon) or is it over kill?

I have an Eheim 2215 that came as part of a used aquarium 120 G package I bought. Unfortunately the motor is toast. The rest in good shape, quite new. I replaced the impeller, shaft and bushings trying to figure it out and get it running. Anyone have a working model or parts thereof, they would...