While you are wait
These questions pop up every year as I-Day gets closer. There are pages of advice every year.
If the internal SAF function doesn’t bring up enough “I-Day” posts, try an external Google search and insert “site:www.serviceacademyforums.com” into your search string.
There is a post with a photo of everything issued - someone probably has it bookmarked. It’s a pile.
Every year there are PTBs (plebes to be) showing up wearing their athletic shoes and compression shorts under a pair of pants or shorts, a shirt, and a gallon baggie with a charged phone, charger, wallet, and required paperwork, maybe one or two other things. That’s all. They do just fine. Lean and mean.