One of the things you will discover as you distance yourself from the WTS's belief system is that it is not necessary to have all the answers provided on a silver platter or in a bound volume.
While there is a certain amount of security in believing that the JWs have all the answers we need, it comes with the harsh reality that we do not have permission from the WTS to require solid evidence or to ask questions when things don't seem to add up or make sense on a rational level.
It's kind of comical how the elderly sister implored you that "there is still time". Armageddon has been "right around the corner" for decades now. When I decided to return to school in my early 30s, an older sister chastised me and said "Why are you throwing The Truthâ„¢ away so you can have a career in this old system? Armageddon is so close!! You'll never use that education for anything." Well, the joke is on her, because not only did I spend 3 years getting my education, I have been using it in a very rewarding career and I will be celebrating a full decade since my graduation in about 6 months time.
There's still time, all right. Lots of it. Do what you want to do with your life. Don't put your life on the back burner and squander your energy and resources slaving for an ungrateful book publishing company. Look at all the elderly JWs who have been Waiting on Jehovahâ„¢ for decades. They neglected their education, their careers, their pension fund, their retirement needs. They did not invest wisely, and have nothing to show for the blood, sweat and tears they spent on the WTS. Just because they made that mistake, doesn't mean that anyone else has to do the same. Learn from their example, and don't make the same mistake and trust in an artificial deadline.