I love the concept! Of the above, I like "Giving your business wings" the best. It kind of flows if you say it out loud. Some of the others are more of a mouthful to say. They don't flow quite as well.
Just to throw some things out there, based on your concept and brainstorming:
Giving your business Angel wings
Grow your business with Angel wings
Guardian Angels for your business
Our Angels save the day
Work got you down? Keep a Virtual Angel around (could be business instead of work)
Nothing else is coming to me now

But, I'm sure others will have something great to add.