Hi,
Your Rack has the identical processing power as my Helix floor - plus lots of options for multi path signals.
BTW it’s not just 2 signal paths, but actually 4 each with it’s own input, and each of those four paths are full stereo.
How about this scenario - acoustic guitar and electric bass, along with a vocal on a mic input path, plus a synth/keyboard/drum machine on the return inputs.
First time you need an extra signal path, you won’t regret having them there.
Hope this helps/makes sense.