PVia,

The paper appears to be fine. I've used this paper for intaglio printing where the paper was soaked for even longer. Probably a 30 minute soaking would suffice as long as it is evenly soaked.

I like the colour of the print in the 1% solution bath. Cool with a hint of warmth. If I want a cooler tone, I'll soak the paper in a 5% solution.