See under 11.4 in the Manual - which highlights the arrangements for Hi-Cap to 282. This also identifies the outputs on the Hi-Cap to power amps. I think your words are correct - but please do check. It’s strange the detailing isn’t in the Hi-Cap manual AFAICS.
All bar the earliest Hicaps give you three stereo pre-outs, all on DIN4s. For connecting to a NAP300 you can use any in any order as they all output the same.