Sigh. Yet another person who, upon graduation, thinks that a cushy salaried job with lots of benefits and job security will be handed to them --just because they graduated with good grades.
It ain't like that.
In the real world, you have to think like an entrepreneur. You have to produce results for a client, even if that client happens to work within the same company.
The aerospace field is significantly less stable than most other fields of engineering. You can get paid a lot, but you don't get much job security. Even well established firms such as Boeing can go through boom and bust cycles.
Setting a goal that you'd like to be able to settle down and not move more than 2 or 3 times in your career is rather interesting, given your choice of careers. I'm not saying it can't happen. It has. But you also have to realize that projects can evaporate overnight, and can leave you unemployed faster than you might think.
Aerospace Engineering is a very competitive field. Many want to do this sort of work. You will be competing with some of the very best. Once you realize that, perhaps you will temper your expectations. I speak from the personal experience of those close to me.
A Ph.D helps, but actual, hands-on, can-do experience matters too. In particular, pay attention to the engineering economics courses, and the entrepreneurial classes. You need a lot more than just theoretical knowledge.
Pay attention to what Pkruse wrote. His estimates of acclimation are optimistic. Where I work, recent graduates would need anywhere from 2-3 YEARS before they can be safely left on their own to do productive work. Even people with significant experience will need at least a year just to figure out what the practices are, and where the assets and resources are located.
Good Luck!