Hi there,
not sure about your conversion but the formula for Defender (du Pont D-54) Print Developer that I have (came from an article about Eugene Smith) is as follows:
Water 1500 ml
Metol 7.5 grams
Sodium Sulphite (anhydrous) 142 grams
Hydroquinone 39 grams
Sodium Carbonate 283 grams
Potassium Bromide 3.5 grams
Water to 1500 ml to total volume 3000 ml
I tried this many years ago and found it to give very cold tones and very deep blue blacks. I found it very demanding to use as it is so intense, requires changing the stop bath after every print (if you use plain water like me) and takes ages for anything to appear and then you need to take the paper out as soon as possible.
I ended up settling on Dokumol diluted at 1 + 6 for 3 - 3.5 minutes. This gives cold tones (even on the old Polywarmtone), rich blacks, about 1/2 grade more contrast, long working life in the dish, has a very high capacity and is very easy to work with.
Bests,
David
www.dsallen.de