@OP:
Given this is a RX300 AWD, meaning that it's a press bearing job.
Since your location is @ the east coast, where salt spray/salt-laden air is common, I'm fairly sure that your bearing/hub is pretty much rusted and the hub and/or cv shaft spline may have seized up on hub, or hub to bearing race.
In other words: be prepared that this may turn into a costly job as the story unfolds (as your mech gradually taking apart all the necessary components before he can press the bearings, etc.)
So, there's no definitive answer to the time it takes to do the job "right" at this point, for we all don't know how bad the rust has gotten into the assembly.
Do be prepared for the worse case scenario: that is: in addition to new bearing set, you may need new hub, or even new ABS reluctor ring set.
Just to give you an idea (worse case scenario) the kind of challenges your mech may have to deal with cars/bearing from salt belt:
https://www.youtube.com/watch?v=uvUzMwisLXU
Enjoy!
Q.
remember this: good/honest mech is not out there to screww you, but serves to help keep your car going in a safe, mechanically sound manner. He deserves his proper pay for the good/honest work he has done for you as a service.
Only crooks/dishonest mech deserves the whipping, IMHO, and should be banned from the industry (do we ever establish a national database for these kinds of dishonest mechs somewhere?)