Sounds great.
I've been hoping you would go ahead with the 1/6th. I love that scale because it's just past the tipping point for the phyiscs. It's big enough for models to look realistic in action with water, smoke, fire etc. 'Das Boot' had many good shots of their 1/6th-scale submarine model riding on the surface.
Your NECA scale model is already detailed enough to give me chills. But a 1/6th version would be on another level.