Nice bike! The Knight wheels look good on it.
I’ve had a bunch of Ventums come through my studio now and have had a few months to figure out cleaning my own. My go to solution is Simple Green Bike Cleaner. Spray it on, it foams up a bit, then just wipe it off.
The oversized tubing on the Ventum makes it easy to just go at it with a rag and solid cleaning agent.