that's a good pedal order, though you'll get a pretty dramatic sound difference if you try your Phase 100 after the OD (you may like it better than infront of the OD, but then again you may not!)
yup the ideal order would be wah-->OD-->phase100-->EH-2
personally, i would put it OD-->phase100-->wah-->EH-2
i like the wah after distortion. it acts like a volume/wah pedal like this and REALLY wahs your distortion rather than sounding like a filter turning on and off when placed before..
remember... theres no right answer in pedal placement. just preferred ones.