I have 1 winghart racquet and i'm planning to buy a back-up extra racquet. 2 water jugs , a towel , 3 tennis balls , cap and a pack of pretzels. What bag do you suggest I can get with these things in mind? I'm thinking of getting a 3-pack bag or a backpack made specifically for tennis. Currently , I use a backpack but it's width is that of a 6-pack so it's very very bulky and not easy to use.