Didn't read everything, but in terms of crit vs det, you'll never have a time where Det > Crit simply due to crits quadratic growth. At crit levels over 1300 you'll see a weight of roughly 0.3 which is 50% more than det. Det doesn't see this kind of growth and will therefore always be behind or rather, after a certain amount of crit the gains from crit will be superior to det. I used to have graphs on this but they are lost somewhere.

As for SS it's definitely not possible to predict with simple math. I'll have a proper sim out some time before SB that should be able to see exactly how SS affects the damage but it's a very hard stat to put a value on. Depending on fight enocunter it will also vary if there's a gain or not depending if you land an attack or not and you'll more or less never know the accurate push time in any fight because SE can't properly design their encounters even if it's static (See A9S where faust could land at 2 completely different times).