I personally wouldn't give up the opportunity of getting in. Its very hard to get your foot in the door but you can continue the process and once everything is done and they are going to hire you. You can tell them you’d like to defer and they'll put you on hold until you want to be considered. However you have a bit to go through in the hiring process still. I received my first canvass email in sep 2020 didn’t finish the hiring process until march 2021. You do what you think is best for you, but I wouldn't pass up transit EVER. Its not easy to get in. But continue your process decide when yr actually getting hired because canvassing is just the start.