You are unlikely to get approved for the Premier Pass card with beginning credit - and if memory serves right - they do require a minimum income.
Give the Diamond card a try. I think you are likely to get approved to that one - and it gives the bonus for gas/groceries/drugstore purchases.
All Thank You points can be combined into a single account. That should have been clear from my post above.
Wow - I hadn't see the ATT card change - I am sure glad I now have 3 accounts with them! I thought this would go away for new account but just wasn't sure when.