Hey Bill
Great stuff... don't throw out that diffusion head, that's authentic 50s gear !
The hot setup in those brave days was a focomat or valoy, and while they are condensor heads, the condensor sits on top of the neg, bringing the 'lightsource' into contact with the neg, resulting in a semi diffusion. Most of the guys I knew whe were working then either left it alone, or added a little drawing vellum between the anti newton disc and the condensor, making it a diffusion head.... same effect from a durst 606, or quite a few great enlargers from those thrilling days !
You can push the 100 film to 400 if you want to do the early '50s journalism thing.... it took a long time for tri x to catch on !
have fun
don