You have an L, I only acknowledge 2 models, L and LX, there is variation with LX, but L is L, which you have discovered is very adjustable. Your first lens was a bundle. Come back to it later. The Nikon is interesting. I have one.
I think Horseman are better than Sinar as they are more rigid. Horseman can use Sinar bellows and lens-boards.
When you get the Nikon we can discuss Horsemen GG and Fresnel. Or not.
Have fun!
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