Just depends. A Static Line jump is simpler. You don't learn free fall skills right off the bat, it's all about being stable during deployment and flying your canopy to a safe landing.
However, it is a dying discipline. Most of the busy DZs don't teach that method. Not all of the C182 DZs teach it either.
AFF will throw a lot at you, there's more to learn and master, and for some people it can be a little overwhelming. But the learning curve is higher too.
To each their own. But as to your last question, yes, the instructor can jump out after you if he/she doesn't have other students to jumpmaster. Mine jumped after me and got on the ground first ahead of time and guided me in on my first few jumps.