As to the light blue toner, I use the Canon Lucia formula described in several PDFs, such as http://www.paulroark.com/BW-Info/3880-Eboni-Variable-Tone.pdf at page 3. Note that there are several variations. Initially, when I was just toning Eboni for matte printing, I used 10% Canon color pigment to 90% generic base. I increased the color pigments to 25% in later PDFs (75% clear base) so that it would be strong enough to neutralize carbon on glossy paper, including in the deep shadows. Particularly in a 1.5 pl printer, there is really no reason to use the 90% clear base version. Also note that for glossy work the dilution base can be MIS "amber base." This reduces bronzing. There is no reason to use the amber base if you're using an Eboni based carbon inkset, however.
Note also that MIS now sells a light blue toner that uses its pigments instead of Canon pigments. (See the bottom of https://www.inksupply.com/roarkslab.cfm.) I have tested it with profiles written for the Canon based toner, and they appear to print identically. The MIS toner's advantage is that it is pre-mixed and the initial investment is less. (I have not done the calculations to see which is cheaper if you mix your own generic base.) While I have not fade tested the toners against each other, my assumption based on what I do know is that the Canon toner will result in a more stable print tone over the very long haul. For most printing, most viewers will never see the difference.
Paul