As for focus pulling, how exactly do I get away with it, since people going out of focus is quite easy to happen?
Depends on your f-stop.
Sure with a shallow depth of field, people can go out of focus very easily.
At f8, you have much more latitude. The talent has to move quite a few meters before they go out of focus. We filmed most of our masters where talent walked at f8 and did not have focus issues - though we were shooting inside an apartment, not outdoors.
Obviously the other factors are your lens and your distance from talent.
Depth of field calculator