They gave us the same request and we got AIP right after
Your list looks good to me. I suggest you format it by organizing all the files into one PDF with a checklist at the front telling them exactly what each included document is. When I got my ADR they also told me to include a copy of the ADR letter. So my PDF had:
A cover letter with checklist and signed by us both
Copy of the ADR letter from IRCC
Our drivers licenses
First month’s worth of utility bills from our being in Canada together (hydro, cable, internet, cell phones, etc)
Most current (last month’s) utility bills
Insurance stuff
Banking/credit stuff
Employment stuff (tax forms, joint filing for 2018, most recent pay stubs, etc)
I think you wanna show a range of time, to prove you’ve both been here together the whole time, so include a range of dates, not all things from a year ago or all things from right this moment/month.
Since they did ask us to include a copy of the request letter you may wanna hold off sending, idk, but you look prepared!