I am going to buy 300 AP3802E and 10 controller CT3504 for 10 branches. I will deploy each controller to manage 10 AP or 30 AP or 50 AP depends the size of each branches. All controllers will run standalone.
So, could you know how the license of each controller to manage AP?
First know how many per site. Then after that, the 3504 has a RTU licensing so you can activate the number of AP license for each branch. You can just buy 300 license and split them up however you want.