This is my take on Reclaimer PvE build. With this build you have 34% skill-haste and more than 351k skill-power which results in having 28.8k HP/s healing rate out of the box and pulse gives 34.8% Crit chance with 46.4% Crit Hit Damage, since we are using tactical scanner pulse, all weapon damage is increased by 5%.
We only have 34% skill-haste since the station gives you additional 15% skill haste which results in 49% skill-haste which is close to skill-haste cap i.e. 50%.
You can use healing rate performance mods and and all skillpower mods to get above 32k HP/s healing rate from your station but your cooldown is larger and box range is smaller which is okay but a larger range gives more room to your teammates.
M700 Carbon is in secondary because as a healer you are mostly staying in the back as Legendary mobs are a lot tanky so leave them to the teammates and focus on buffing them via pulse as there is Coolheaded in Free you can get pulse quicker than the pulse duration so no gaps between the pulse. Coolheaded in Free and not Determined as to proc Determined you have to kill the enemy which is little difficult as there are damage dealers in the team and Coolheaded can proc with only a headshot.(coolheaded have 3 second cooldown)
The sidearm there is Blue one as talent requirement is lower in that. You can use the Yellow 204 Gear-score sidearm too. This makes you easier to farm your ult faster because of Coolheaded, You can swap between pistol or M700 depending upon the distance to proc coolheaded. And there is 3 seconds cooldown to coolheaded to proc, so that won't make any difference on using m700 or pistol for coolheaded.
You can change your Signature skill to Tactical link and use your pistol to proc coolheaded nearby to get the next ult faster.
1 piece of advice:- Always pop the box while inside the box before it runs out to not only get overheal but also lower cooldown for next box cuz if you pop box when outside you only get 34% skill-haste but if poped inside the box you get 49% shill-haste which makes your next box faster.