Tim, I am with Kevin here. I am using Quick Start on seedlings and transplants that are growing in what is essentially Sunshine mix. It's a comercial mix of peat and pearlite that is basically sterile. It's not the soil in my garden. I am a huge proponent of soil testing before just randomly pouring nutrients into your soil. I think your calcium nitrate sounds like a great idea in your case. If i had beds like yours i would only use quick start when I first planted something in the bed just to help it with transplant shock and might even mix it a bit week.
( As Kevin pointed out, it is very solualbe and therefore ready for immediate uptake by the plant.)
Then leave it alone and see how it does. If you are not growing for fast increase of a new variety you probably do not need to use it all the time.
