".............what kind of set up are you using?"
See earlier post, with photo.
Conceptually similar to your, very professional, unit at a fraction of the cost.
My initial design had a flexible draw hose, just like yours. Worked well when pumping from rigid fuel containers.
Problematic when on an away trip, trying to pump from a collapsible fuel bladder.
(20L Fuel bladders used when on a way trips, to fetch ULP).
With flexible hose, needed extra hands to hold on/off switch, delivery hose, pump head and support fuel bladder.
Came up with the black plastic Poly pipe irrigation riser, screwed to inlet side of pump. Poly pipe inserted in bladder, now self supporting.
Initial design, had inline fuel filter - restricted flow too much - replaced by a "Mr Funnel" achieving same end, without loss of flow😈