If the model is to have an interior, glazing and realistic doors then it is not what was on display at Raheny. We can only comment on what we have seen. I'm sure everyone will reasses their opinions when we see the improved models.
To my mind contents are contents. What's the difference between me having (say) 6 TVs or 6 071s in the house? There is no comparison to a work of art (even though the model is) which increases in value and would be attractive to a thief.
You just have to take a deep breath and do it - no hessitation. It will work if you follow the advice above and ensure the handrails are disconnected from the cabs.