Well that's basically a converted Trumpeter Seawolf.
Haven't done business with them personally, however I have tried one of the pumps they sell- the geared model. This was a very nicely designed pump ruined by a poor choice of materials for the gears, which were far too soft. If they'd used composite or brass gears, the pump would have been superb.
Also be aware these models look very small pondside. That may or may not be an issue for you.
I'd say you'd be better off looking for a secondhand Sheerline Akula, which you can often pick-up for the same sort of money. Far more rugged, still nice and portable, but won't get lost on the lake.