Until and unless you run an academic department or are a sole curator, or fund your own excavation, you are unlikely to get any use out of the megalomaniac laugh you practiced during grad school. Most Egyptologists report to superiors: other Egyptologists with more time on the job or a bigger title, university heads, government officials. Without tenure, and with all those newly-graduated Egyptologists beating on the doors outside, you’re going to have your hands full just to keep the power you have been given, let alone risk getting more. Power will be far more likely to come to you due to accomplishments in your job than as a result of any ambition. You’ll work hard for every bit of it either way.