Digging with Duggar's Ver. 2

Ninja seems like a poor choice at two influence each, especially when you have Mimic, a much more effective sentry breaker, in faction. It may look efficient at a first look, but it has 0 strength to begin with. That's extremely crippling, causing every sentry to cost at least 3 credits. Mimic costs one less and has a whopping 3 strength more. It does have the disadvantage of not being able to boost its strength, but you have Datasucker, and most of the popular sentries have 3 or less strength. I'd say swap the Ninjas for Mimics and see if you can fit any more support for it, like Ice Carver or Scrubbed.