Here is the maximized build for Disruption game mode.
Check below to see another way if you've not forma umbra there is some variants.

3 Umbra, Increase HP, Armor, Power. Power is needed if you don't have any Magus to heal your Warframe it gonna make you heal faster, otherwise Power isn't significant.

[Stretch]: increase the range of 1 to CC pretty useful & allow to finisher to kill huge mobs.

 [Hunter Adrenaline]: To gain energy without Zenurik focus.

[Undying Will]: allow more time to your allies to rescue you so they can still hit the demolyst while you're bleedout.

Adaption: Damage reduction, allow you to tank. Around lvl 600-700 you gonna die anyway.

[Handspring]: Very useless get knockout while attacking demolyst make you lose so much time.

Gladiator Resolve: More hp & a little crit bonus.

Other variants with less forma:

https://overframe.gg/build/1556/inaros/azeoak/
https://overframe.gg/build/1616/inaros/takitsu21/