That does look good. And it's better than coiling the hose in a tote in the front storage compartment under the bed. Don't ask me how I know this.
I have the same XT245, so I just looked underneath. There's a mile of room behind the rear axle to hang either a fence post or a PVC sewer pipe under the frame. Probably best to put it close to the jacks. Likewise, there is room between the front axle and the pull handle for the tank drain. That may be a better location both for convenience and for protection of the pipe.