Welcome to the forum, btw that's a great intro.
If I were you, I would really continue with what you've got for a while. It will become more obvious as time goes by, what additional stuff you really need for your style of photography and for what your trying to achieve.
This may not be what you want to hear, nor do I wish to curb the excitement and the enthusiasm you have just now. But if your better informed as to your needs, you will make better decisions.
Good grief, I'm beginning to sound like my Father, please forgive me.