Really love your fabric choices!
I made the 18M/2T version, and the only thing I found that didn't make sense on the pattern was the fabric requirements. It said two yards of the shell fabric and the lining fabric, but I had a metre of both (I'm in NZ and we work in metric), and there was more than enough.
You're right, I should be clearer about the fabric requirements
2yds is really the maximum needed... If you were making 3T / 4T on 44" width fabric and the print is directional, the front pieces, back piece and sleeves all need to be cut one above the other rather than side by side. I'll clear it up for my next print run, thanks!