Seeking a new laptop backpack. This would typically used for air travel in addition to a 20" rolling suitcase. Need recommendations on something with the following features:

1. Fits 13" macbook air (should be no problem), 10" ipad, 7" kindle, larger headphones in case (currently Sennheiser HD280), and various charges/wires. Then incidentals like wallet, keys, sunglasses. Ideally would have an outer pocket for the later.
2. TSA checkpoint friendly
3. High-contrast interior. Love the orange on Ebags offerings. But, will settle for a light gray or most colors other than black.
4. Smallish. Under 40 linear inches would be great.
5. Lots of built-in pockets
6. Loop in rear for putting on top of my rolling suitcase

Leading candidates so far are TravelPro Crew 9, Brenthaven Metrolite, and Everki Flight. Any other suggestions? I wish Ebags would just make one of their bags checkpoint-friendly.