I interviewed with them two years ago but I decided not to take the job.
Yes, you will get a lot of hours. Be warned that the Phoenix area is HOT in the summer. But when you give IFR training it will be done at night so the heat won't be a problem.
Here is another thread on them.
Transpac Aviation Academy
One post in that thread really jumps out at me:
05-30-2017
"Once upon a time transpac was the place to be. I have heard the new owners/management is absolutely terrible."