Yea - all gold here also. I actually had the hardest time with the all-dry sections with the slow car, the first ones I believe. All the others, especially the wet, were pretty easy.
And for splits.... just make your own mental notes on 2 or three memorable corners. That's what I did - for example, the last one ending the track my split would be once I hit the big sign over the track at the start of the long end straight....needed to be at x:43:00 if IIRC - and it's been forever since I did them.