The AX8 Legato 100 ("amp model based on a certain famous Carvin Legacy 100") does not give you the sound/tone you want?
Although I do not have a Carvin Legacy pedal I don't think you can damage anything since you are just feeding a sound signal.
The setup/path looks ok but maybe another forum member will have better info.
You might be able to get some information from this video by
@2112