You have too much HP (vitality and %life make sheet toughness increase a lot but its pointless if your armor and resists are low). You want around 300-350k life, 10k+ armor, 2200+ all res.
socket on pants and chest
roll that vit on MM to CDR
Better ammy, %fire is better than CDR
get a fire SOJ
If you have vyrs gloves and a thunderfury i wouljd experiment with using them and adding in crimson set. this also frees up shoulder slot for aughilds which lets you use strongarm bracers in gloves. Not sure which will win out in damage output, magefists of thunderfury. You want around 55% CDR if you going MM/Archon hybrid (dunno what you currently have).
Make an aughilds helm with 6% CC
Int, vit, res, armor is 4 stats you want on belt
string of ears belt if you wanna keep your current item setup.
Lots of other posts similar to this so you can have a look at them as well
When I play solo I switch the rare ring with Unity (+ unkillable follower).
I manage t5 with Unity and t4/5 in group without it. I;m sure most of my gear can be improved, so any feedback is welcome
And there is only one thing we say to Death. Not today.