Its just my opinion, but you have everything you "must have". Just go out and shoot things that strike you as interesting. From that you will develop on your own, what you feel you may be missing. For instance - lets just say for the sake of argument, you just have the kit lens, however - when shooting you always want to get closer. Then you need something of a telephoto. From that, you can post - I need to get closer, what are my best options?
What is a must have for me, might not be a must have for you. Right now - you have no idea as to what you want to do. Its like walking into a car dealer asking what you must have, then driving away in an Austin Martin to pick up groceries....
Shoot, shoot and shoot some more. Take a look at the images and see what you like and what you dislike. On the ones that you dislike, why and what can you do to make it better? That is another question to ask here.
We love spending money, especially when its not ours. We can spend you directly into the poor house.
Edit - I rarely shoot with a hood - but then again I shoot in the evening/night and really don't need one. I also shoot wide angle, and polarizes for me make the sky very uneven. So, from this you can see that its not a uniform set of "must haves", its all based around how and what you shoot...