We're about to file the I-751 and as we're doing the cover letter, we realized that we might not have enough evidence due to our living situation. We live with our parents/in-laws since my wife came to the US with K1 Visa. We don't have any mortgage bills, no car ownership, no utility bills, no insurance, no membership together, prepaid individual cellphones plans (MVNO).
Here's what we got so far as evidence checklist.
Are those enough or am I missing anything else that could be added given our situation?