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You have a 90% approval shot. Give it a try and go for it. I would bet you get it.
No matter what happens just go in the garden right after.
Hmm well the only concern I see with your profile is it's still relatively young with those three cards reporting but I think if you really wanted to you could probably app for and get the CSP because the banking relationship matters IMO. I would just make sure before you do apply that your scores are accurate so you don't have another Amazon incident where you're stuck with a possible denial because of a temporary dip in your scores. Also check to see what other bureau Chase pulls in your state for the CSP as well to make sure that score is good too; they're normally a 2 pull bank.
I think you should wait a bit more since your AAoA is only 8-9 months old. Although banking with them certainly helps, gardening will give you a much better shot at it. But it all up to you of course...