I'd like to buy some headhunters to play using feedback array, but i have a different roster idea:

4xZ-95 Headhunter: Binayre Pirate (12)

Cluster Missiles (4)

Guidance Chips (0)

Glitterstim (2)

2xZ-95 Headhunter: Binayre Pirate (12)

XX-23 S-Thread Tracers (1)

Munitions Failsafe (1)

Should i get some other rockets/ships?

Cluster Missiles probably has the best synergy with Glitterstim, so I think it's a good choice. But I would consider swapping the back rank Clusters for Concussion Missiles so your engagement band isn't as limited. It also gives you some diversity in your shots.

For example, if you catch a Soontir with Stealth Device in arc, using Concussions to punch through the SD will allow your Clusters to finish the job. Alternatively, if he's turtled with 3 tokens, using Cluster Missiles to deplete some tokens before launching some Concussions will help crack the SD.

^Thanks