Arigram,
I also agree with Fintan's choices.

I own a Hassleblad, a 120 Makro Planar, an 80mm, 50 mm and a 40mm plus several A12 backs. I use the Hassleblad compendium lens shade. For macro photography I recommend that you also consider a "chimney finder" with a focusing magnifier lens. Hassleblad makes a good one and the Ukrainian Arsat (or Kiev) chimney finder is also a good one.

I now use Efke 100 in preference to Ilford Pan F+ for my B&W nature photography.