you have arrived at a point where you will need a lot of determination to get it right, so don't give up!!
One bit of advise, when you print in Photoshop, in the print dialog:
In print settings, fourth setting from the top , go to "quality and media" and select the right Media type and set quality to high. SAVE.
In the colour management box:
Photoshop manages colors
Printer profile should be the same as the media you selected before. If you do not have the profile, download it
tick black point compensation
At least this way, you know that you use the right ICC profile for the paper.
Your Pro9000 as it is DYE based printed, should give you very vibrant prints, trust me , it is a GOOD printer.
as I mentioned before, print a test chart and compare.
I know that I am repeating myself, put set the brightness of your monitor as low as possible.