Ride it! Ride it for many hours. I'm out of talent before I am out of ski.
I think that list is pre-2008 MY so maybe take some of the items with a grain of salt.
Also I don't know why for example I would want a scupper for recreational riding (not surf wave jumping).
Probably don't need dual cooling either on the lakes I ride on.
The stock prop 2008+ is also quite good.
Bars, turn plate and intake grate seem reasonable.