What's the order people are doing these in? I'm a new customer and I'm assuming one cannot do both AA and United correct?

Will this order work? I'm really not sure where the Apple and/or AA bonuses come in.

1. Open an account using the United Link - cycle through $100k - wait for miles to post
2. Ditto using the Delta link - cycle through $100k - wait for miles to post
3. Ditto for the Apple Promo (new and existing)