Yes
Missed this in my main update; it's updated now.
the best bet in that case would be the 850 - Chaos Strike is worth 10 ilvls, so putting the 835 would result in roughly the same damage as if you had an 845 of a lesser trait.
FWIW you can just change the number of points (ie, instead of a +1 in Dbite trait a +1 in the CS trait) to sim it without having to have it, though you'll have to mess with ilvls slightly. Not positive how to do that OTOH in an easy fashion.
For the second, it's a slightly higher gain in ID.. if you trust your tanks and if it's AoE and if you don't play Demonic ever (which you really shouldn't if you're pushing for min-max stuff currently anyway) ID > Contained Fury. If not, Contained Fury helps with pooling, so is still a fairly strong trait.