I have used Fireball decals on other projects and also think they are great. All their products are top notch.
For another Lakota, I recommend the US Navy Test Pilot School bird off the Fireball sheet. It looks really nice and is pretty colorful; at least it is not Helo Drab Green.

One pointer on the above Hohenfels OC bird though, get rid of the figure. Firstly, these arircraft are flown by Observer Controllers (OCs) at a training center. The OCs are like umpires and trainers for the training unit. They do not carry weapons. Also, the figure looks like the woefully under-scaled Trumpeter 1/35 CH-47 crewman. He is even small for 1/35 and looks like a child next to the larger 1/32 Lakota. I would go sans figure.