Precisison or Sustained Hits in invasion fleet?

Hey everyone! I will face my friend's Black Templar army and I was wondering if I should take Precision in invasion fleet and try to snipe his characters. Any advice?

Here is my list: +++++++++++++++++++++++++++++++++++++++++++++++

• FACTION KEYWORD: Xenos - Tyranids
• DETACHMENT: Invasion Fleet (Hyper Adaptions)
• TOTAL ARMY POINTS: 1295pts
• WARLORD: Char1: Broodlord
• ENHANCEMENT: Adaptive Biology (on Char2: Hive Tyrant)
• NUMBER OF UNITS: 9
• SECONDARY: - Bring It Down: (6x2) + (1x4) - Assassination: 2 Characters +++++++++++++++++++++++++++++++++++++++++++++++

Char1: 1x Broodlord (80 pts): Warlord, Broodlord Claws and Talons Char2: 1x Hive Tyrant (220 pts): Monstrous bonesword and lash whip, Monstrous scything talons Enhancement: Adaptive Biology (+25 pts)

1x Exocrine (140 pts): Bio-plasmic cannon, Powerful limbs 10x Genestealers (140 pts): 10 with Genestealers claws and talons 1x Maleceptor (170 pts): Massive scything talons, Psychic overload 1x Psychophage (110 pts): Psychoclastic torrent, Talons and betentacled maw 1x Psychophage (110 pts): Psychoclastic torrent, Talons and betentacled maw 1x Screamer-killer (125 pts): Bio-plasmic scream, Screamer-killer talons 1x Tyrannofex (200 pts): Powerful limbs, Stinger salvoes, Rupture cannon