If you have some scrap, make a sandwich of the top, batting, and backing, and do a little practicing - see how it goes. Bias binding handles a little differently than binding cut on the grain, too.
As someone said earlier, it's your quilt - my bindings usually finish at almost 1/2 inch wide - I just prefer the heftier look - and it works perfectly with one of my machine settings.
And almost everyone learns something new every time they do something different. Sometimes even when making something again - usually about half way through and the change in technique would show.