What is your ultimate goal? If it is the major airlines, get in the 121 world as soon as possible.
Your corporate job progression mentioned sounds extremely aggressive along with the salary increases. Is this the company version of a recruiting tool or have previous pilots before you followed the path and timeline. Is it 91 or 135? Be very careful with 135 operator promises. They will claim the flying is down, the owner moved or sold his plane etc as an excuse.
I did major 121 for 20 years, fortunate to be a young captain to the end. I moved to 91 Chief Pilot 15 years ago for QOL, pay and the challenge. I have never looked back. I am home more, make more than any 121 Captain and the challenge is there everyday.
In this career, you get out what you put in. If you are willing to do the extra work, this career can be very rewarding. If you just want to fly aircraft, go 121. The pay and progression are as good as ever.
Don’t let anyone tell you cannot do it and stay positive throughout!