I think that looks pretty good. Can't see from the pics anything particularly off about it, apart from the colour in comparison to the real life photos. surely, though, a little weathering, airbrushing? if it was the colour you didn't like then hopefully that won't be too hard to fix for the next time.
tbh, if I didn't know I was supposed to be looking at the ballast in those pics then I probably wouldn't have even noticed it. I think ballast is bad when it's the first thing that hits you when you look at a photo (massively overscale, garish colours etc)
otoh, your attention to detail is providing many great things and I'm sure redoing the ballasting (again) will be for the best when it's finished.