Hmm, just checked your gear again, and alternatively you could also reroll both weapons to 7% IAS so you can use the Templar instead.
Anyway, the concept of attack speed breakpoints is that the game runs at a fixed frame rate that has no "in-between" frames. That means it's possible to increase your IAS% without actually shortening the animation length of your attacks.
An attack speed breakpoint is a value of IAS that you need to reach to actually shorten your attack animation by 1 frame.
To show you what I mean:
Any time you find a piece of gear that changes your IAS, it's always a good idea to check in D3Planner to see if you're hitting or missing any breakpoints. You'll also likely be doing it again when you switch from DS + Blinding Speed to Radiance.
As for BoH, don't be afraid to use it. Eventually you'll get a feel for when you should be popping it and when you should be holding it, but until then just try to make use of it. Besides, you're running Beacon of Ytar, which should help with the cooldown.