I think I found a substitute for the SURFANOL 465. I found a product with the same CAS Number (9014-85-1) over at http://www.sigmaaldrich.com/.
I just ordered it and powdered potassium sulfate.
I also ordered some Glycerol by RPI that I found on amazon. Hopefully the recipe works.
I have yet to find a place to get Proxel GXL. I’ll just leave it out for now and see how it works.