Suggestions for Trickster

Playing a dual-claw Trickster using GMP Divergent Cobra Lash for clear/ranged and Viper Strike as a melee killer for some bosses and other big bois. Cobra Lash has Summon Phantasm Support, providing a steady stream of meat shields to keep the heat off me. Also running Summon Reaper and a bunch of movement skills: Withering Step, Phase Run, Temporal Rift, and Charged Dash. Mobility helps keep me on the fringes, firing into a crowd of monsters fighting my phantasms; I can run in and make quick strikes on anything that isn't getting dealt with, then Rift out to safety.

Chaos and Elemental Resistances are capped at 75%. Gobs of lifegain coming from the 40 life per hit on the weapons; Ghost Reaver provides quick energy shield recharge during combat. Running Vaal Grace for lots of evasion, and have 5% of Evasion as Armour from Armour and Evasion Mastery. Sitting at just under 2000 life and about 1400 energy shield.

PoB configured somewhat optimistically for 5 poisons on the enemy: https://pastebin.com/cDQf6Zse

I'm still pretty new to the game and this is the first character I made (though I played into endgame with a couple of others and then came back to it). I'm still progressing at level 89, basically doing new maps just after leveling up (and dying fairly frequently) and then leveling up on lower-level maps (tier 10, currently).

My goal with this character is basically to level up as much as possible before end of league and also to explore more of the endgame, as much of it is still new to me.

What could I do to improve my build? What passives should I pick up next? I'm torn between getting more spell suppression and adding DPS (Toxic Strikes + Poison Mastery will get me about 22% more damage with four passive points). Might also be good to pick up more life from passives soon.