You can save yourself a lot of trouble by using Ethol LPD @ 1:5 dilution. It's cheap, readily available, has great shelf and tray life, and it produces beautiful tones. It brings out the best in warmtone papers.(posted 8437 days ago)I do agree that the glycin based developers are nice--better than most--but since I discovered how nice LPD is, I have never gone back to BW-65 (Photographer's Formulary) or the various blends of #130.
Another suggestion you might be interested in is Forte Warmtone Plus FB paper. IMHO, it has far more beautiful tonality than Ilford's WT, and it tones superbly in selenium, taking on a deep, rich, lusterous chocolate-brown tone. Side by side, Ilford's WT looks dull, while Forte WT Plus sparkles--much better highlight separation. Forte Plus is also heavier by about 50%, and the surface is smoother. Just be sure you get the Forte PLUS paper, not Forte ART.