Help with solo MF Marauder

I've been working on this solo MF Marauder for a while now, and I'm pretty happy with it. I'm lvl 86 and I've been doing 74/75 maps without too much trouble as long as there isn't a particularly hard boss or mods.

But the clear speed isn't great and I do occasionally get wrecked (tried a lvl74 Courtyard map from Zana and the trio destroyed me fast)

I have 100/205 iiq/iir, 4k hp, use a 2h axe with molten strike, and a lot of CWDT effects to improve survivability. 90% of mana is reserved for Hatred, Determination, and Herald of Ash.

Any advice to improve clear speed or tankiness would be greatly appreciated.

Thanks.