What gem type did you put the Caldesann’s Despair in your gear? DId you put DEX in all your gear or did you put any specific? How did you Despair your Helm?
I was considering using Dex(85) for my main pieces and VIT(60) in my belt(last longer).
I search a lot of places and could not find any comments about this subject.
I always start with my best rolled piece, as it’s less likely to be upgraded.
You definitely want Dex.
For your DH, Dex is what you want augmented on all of your gear.
Looking at what you are wearing, your Cage of the Hellborn is really the only piece that I’d augment at the moment.
There are lots of small things that can be done to your current gear to make it more effective without spending gems on Caldesians.
Can you recommend a site where I can get info to better adjust my gear?
Icyveins has some build guides with optimial stat rolls.
Post your d3planner build link here and there are a number of DH mavens that will help you…
like this:
https://www.d3planner.com/639979916
paste your link, highlight it and then use the </> button to post it (since you won’t be able to post a direct link)…saves us a lot of time looking you up directly 
couple things off the top of my head -
swap to diamonds in all gear
use Bane of the Powerful over Stricken unless you are doing maybe 95+ GRs
need new rings desperately (chd/chc/socket)
try to craft a better HF ammy (elem/chd/chc with a useful passive if possible)
consider crafting the belt and pants/boots from the new Captain Crimson set (NOT the old one) and using RoRG in cube
roll to 50% CHD on your gloves
roll RoV on your shoulders to CDR (you are woefully low)
roll 10-12 disc on your cloak (missing a big chunk for the UE 6pc bonus)
and to answer original question, augment with DEX only!!!
Hopes this works
https://www.d3planner.com/270239310
Yep - that’s perfect - now take some of the suggestions, run some content, then repost with a new link (showing updated gear) and comments…then we can help you tweak further!!
Happy pew pewing!!