L337
I have 10000 hours in commercial ops.
Where I work you have to be stable by 500' but they teach people to fly Ref+5 for miles before that.
Do you know what 'handling speed' is? It's not type specific.
As for flying a bit faster: I think most folk could and still be stable at 500'
Maybe you'd struggle on your type? I know not. Depends on the type. And the pilot.