I shoot with a Rodenstock Grandagon N 90mm 4.5 on a Arca Swiss and for sure it is a awesome lens. I also use a Schneider 65mm 5.6 Super Angulon on a Galvin View. I have nothing but positive praise for both of these optics. Having said that, I would recommend the Schneider 5.6 on your list before the Nikkor 4.5 mainly because of cost and in my opinion the German optics have a better look, especially the bokeh. The 5.6 is fast enough to make focusing pretty easy, certainly not as bright as a 4.5 but bright enough. Your front element will be smaller than the 4.5 so that will save you money on filters. The f8 will work but they are more frustrating, however they will save you quite a bit of money. You can always add a fresnel screen but it may be cheaper to buy a faster lens in the first place. Whatever you do I would not mix lens types, if you buy Nikkor, stick with Nikkor or Fuji for the rest of your future optics as they are warmer in tone rendition. If you go with Schneider, stick with Schneider or Rodenstock on future optics, they are slightly cooler optics affording more neutral tonality. It is ideal to use the same brand for your entire arsenal. On my Arca system I use all Rodenstock. On my Galvin I use mixed Schneider and Rodenstock. I believe the Caltar II and II N lenses are all made by Rodenstock but Schneider may have made some of those Caltar optics.