You should be stacking Power Strength to max Peacemaker dps.
You also has decent duration, which will slow the drain of Peacemaker. 200% Power Strength
This build has high enough duration that you have long buffs and dont waste too much energy while in Peacemaker mode.
The 200 strength does crazy damage, while keeping good energy efficiency.
Range helps with your buffs, and causes Peacemaker to reach more targets.
Here is my build http://warframe-builder.com/Warframes/Builder/Mesa/t_30_3322300020_2-7-10-4-6-5-5-4-5-6-5-5-21-8-5-55-1-2-411-2-10-479-3-10-481-0-10-615-9-5_481-7-55-4-411-8-479-7-5-5-6-11-4-9-2-12-21-14-615-9_0/en/1-0-31/0