No worries, been almost 40 years ago since I did this so had to look up some stuff.
Not sure what price they quote, but it's usually FAA minimum flight times. 40 flight for a private lic, but in reality the average is something like 60. So figure an extra 20 hours at $120ish per hour in a single engine. Ag pilots will fly turbine, when you get to that point the price is going to go up a bunch. You need a minimum of 250 flight hours for commercial, that's doable cause they want something like 50 hours of cross country where your just driving around. 4 hours in a single engine airplane in a day is a busy day, most schools you may get 2 a day if it's local air work. Plus the ground school. I find it very difficult to believe this can be done in less than a 24/7/365 period. I would get good references, and talk to the Flight Standards District Office in that area to see what they can tell you about the operation. There are some sketchy operators out there.
If you want to fly for a living, your degree will help when looking for a job. Ag flying is hard work, early morning before the wind kicks up, you handling hazardous chemicals, and if there is a problem your real close to the ground with little options. There are a lot of opportunities out there right now, airlines are hiring like mad. If you really like flying, do it but as far as filling a hole in you employment resume your roi is deep.
A masters in engineering would not be a bad thing. It seems a masters is almost the standard anymore.
