In-ears and having enough outputs

Hey all. Currently have an 18i20, a cheap Behringer 8 channel rack unit, patch bay and the Powerplay IEM system. Currently the IEMs are being fed by the ADAT outs on the 18i20.

I currently have all available analog outs from the interface routed to my patchbay.

My question is this. Is there a better way and/or addnl gear that would allow me the ability to use all 16 available channels on my IEM system without sacrificing my analog outs?

Am I overthinking it? I’m relatively new to all of this, so don’t crucify me if I’m not using the right language.

Thanks for any help! Cheers!