OK - just got back from doing more tests and I arrived at the answer. I am posting here as a reference should someone else need this information. After drying the magenta tone was not as bad as it initially looked, but is still pronounced compared to other coldtone papers.
Here are the results I arrived at:
1:9 - 5 minutes - produced pronounced magenta tone
1:12 Not noticable difference from 1:9
1:20 5 minutes - produced a split-tone effect where lighter tones stayed cold, dark tones turned magenta - very unappealing
1:30 8 minutes - Nirvana! D-Max increased, no strong magenta cast.
1:30 seems to be the magic formula if you do not want a pronounced magegenta cast. I ran it for 8 minutes to be sure of good archival treatment. After seeing the dry prints, I do not mind the magenta cast so much at 1:12 although I did not care for it with this particular image and I may use it in the future. At 1:20 the split-tone effect was very ugly to me (and I like split tone) as it gives a green/magenta appearance to the print.
Hopefully this information can be helpful for others using this paper.