Me an my wife use navy federal an armed forces an yes we see that all the time. I've overdrafted few days before a paydate but since that's pending they won't charge me and I've been able to use that money before the actual pay day.
Yes you could use your existing account just remember to take your routing and account number. Yes your wife would be able to use the money well as long as she's on your account. Lol. Umm since your getting there prob the 7th an give a few days for the paperwork to get processed I say probaly...