Whether something is too much or not depends on the person. There are a lot of people out there who think that I spend too much money on my bikes, and the amount I spend pales in comparison to what some people spend. At the end of the day, spend as much or as little as you want. Our opinion on how much is too much shouldn't matter to you.
But since you asked, here's my opinion: Why buy another hybrid? You already have one that works well. Your current bike could easily be set up to perform well in every type of riding that you mentioned above. Why spend more money (especially 4 figures) on a bike when you already have something that will do what you want it to do?