Keep the azur. I have one and it has become one of my favorites. I may even buy a light color winter jacket just so I can wear it as winter white. The mono bags are beautiful but you see them a lot more. Just enjoy your bag.
Congrats on your new azur, if you love it I would definatley keep it and then get a mono bag later on.
That's the whole trouble with LV, you just keep wanting more and more.
I would keep the Azur and purchase something Monogram later, but it really is up to you. Your first LV should make you 100% totally happy, your heart should sing when you see it and use it! If the Azur doesn't do that for you than perhaps exchange for something else.
I got the azur as my first LV and I wouldn't have it any other way. So I say enjoy it and if you like the mono as the ladies said just get it later on!!!! Enjoy.
Congrats on the Azur. Its a great little bag, and the pattern is a nice change. Maybe later you could find another LV piece in mono......like the beverly clutch, cute with mono, very versatile and classy......