I use my 325 DMT but it is pretty worn :)
I think the slurry will give you a more "Mellow Feel" to the edge it won't change the actual keeness
As to the amount of strokes, see that gets tuff I believe the edge is built much lower and all the finisher should effect is the feel
Have you taken the 1k bevel set challenge ??? Can you shave at 1k ???
The step ladder challenge is even better
Grit numbers vary but basically
Shave at the 1k bevel set
Shave after the 4k level
Shave after the 8k Level
Shave after the Finisher
Do only 20 laps on clean leather before each shave
You can just do a couple of test strokes to get a feel of the edge at each level but this really teaches you what each step is giving to the final edge
You can also add or subtract ideas at each level to see what they bring to the final outcome
#SumFunHuh