Udey1
Prince
Drafting rifles > building cav, especially in a food-filled Globe city.
I said its situational. Especially if you skipped drama to avoid WFYABTA (I often do) or do not have lots of room under the happy cap for the other cities that have to draft. 2 pop whips bring up Curiassers or Cavalry.
Also again it is dependent if you can focus the EP as well. If you can then 2 moves is far better than one.
Also you can sit in Buro while doing Cav buildup where nationhood is required for the draft. An idea I love to do is use nationhood after the conquest is done to get a garrison force in the new cities quickly. It chews up the starving population and frees up your real military.