trying to find the most optimal setup for my crusader.
restarting game.

Thornsader to start till you can play LoN Bombard

look at the leaderboards and just copy that

you'll find everyone using pretty much exactly the same build/gear

As someone who just switched from invoker to lon/bom.
j/c what a change.

Even without any thorns damage on items you will clear anything way faster than with a full invoker set build.
Remember that the play style is also way different.
For elites just look out for the physical rotation on your CoE ring.
When that hits onload that bombardment skill and everything vanishes.

Just make sure you have everything ancients. (rings and belt can be normal because that are the MUST have items)
And try to aim for the rolls mentioned in the link above.

gl

Don't wait for physical. Wait for lighting. 2 Seconds before lightings switchs into phys, cast the cycle.