+1 Rodan68
Profiles made with 8.6 or higher will not work well, if at all, with 8.1. Unfortunately, I dont have profiles for the HP9000 and 790 inkset to be of any help to you.
Eye1 Spectrophotometer (used) will run you about $700 or so. A new unit will run you a grand or more.
Money well spent if you ask most printers out there.