I have a build relatively similar to this that I run often and have always seen success with: https://karl.gg/preview/19412
If you wanna use roughly this set up , I can recommend, for the M1K, a 1-3-2-1-1 set up, so you can have decent swarm clear, while also having enough ammo to spend on picking off high priority targets. As for the Zhuks, a 2-X-2-2-1 set up boasts an insanely high amount of burst DPS, especially on electrified targets. Tier 2 is up to personal preference, as all are good. 😄

I would consider running a Gas Recycling build with blowthrough for your Zhuks. I think it'd pair well with your focus shot primary as it would let you clear through swarms easier.