You can hardly compare 90-100 hours at a US regional to the type of flying you will be doing here. 90 to 100 hours up and down the East Coast, mostly during the day, is a cake walk compared to 90 plus hours across multiple time zones mostly in the middle of night. But hey, knock yourself out if you want to join. You will see for yourself soon enough and will be back on the computer filling out apps for any airline back home that will hire you.