The color profile for your display can just be one: the one for your display ;-) Other profiles will be wrong (it is not the same principle as setting profiles for documents). That said: if you really want good colors you should profile and calibrate your display with a measurment devive like ColorMunki or EyeOne: these will create a profile that is specific for your dsplay (a D65 with 2.2 gamma is most common).
'I shoot commercial work and my work is used for print'
What kind of printer are you using and for what kind of work? Are you printing photos from InDesign?
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Leave it on the iMac color profile until you get an Eye-1 calibrator. After operating the calibrator/colorimeter device, you will have a new, custom profile for your monitor that replaces the default original one.
Adobe RGB 1998 is a good choice for your color management method setup for RGB pictures. It is used as the house color space. You set this in Photoshop CC > Edit > Color Settings. Save a named color settings file. Afterwards, go to Bridge > Color Settings and click on your newly named .CSF file. This will cause the Bridge to go forth and change InDesign, Illustrator, and Acrobat to match the same house rules you set up in Photoshop.
These two sides of the coin are color management: calibrating the monitor, and setting up a color management set of house rules. I recommend you read "Real World Color Management" to gain a thorough understanding.