Thanks Kevin. Yes, Airfix do a MkV version, which is basically the 1970 Mk1 kit with extra bits to make a MkV.
The seat would normally be empty, with the seat-type parachute occupying the 'bucket', the harness of which, if left in the aircraft, would be draped over the seat back, fastening straps clear of the seat.
I'd need to see the prop to advise Kevin. The early MkVs used the 3 blade, metal de Havilland or Rotol prop, later versions had the broad-chord metal Rotol, with the 'pointed' spinner.