Oil cooler lines were not that bad...just do yourself a favor and jack up the engine/disconnect the mounts...

If they need replacing do it now becuase when that drivers side mount is off and the engine slightly higher, you get lots of breathing room

I wouldn't farm the job out...you must remember that mechanics must do the same work with similar tools

If time isn't too much of a factor for you, the DIY repair can be satisfying.

BTW I have a spare cooler