I have a Canon Pro 9000 Mark II.
Only use OEM inks.
I usually let them air dry for at least 24 hours.
When I have several photos I use an old wire CD holder that will stack about 20 on each rack with some air flow in between each photo.
I agree on air drying for at least 24 hours. Ink will harden and change in this period. It is also important if you are producing ICC profiles to leave this period before measuring targets for the same reason.
You probably know this already, when mounting behind glass or acrylic you should also make sure there is a 'breather' space between print surface and glass to prevent adhesion to the print surface which may prove impossible to separate without damage to the print