I've just done two shoots under exactly these circumstances. One in a supermarket in Mexico City and one in Orlando.
I'd do a test shoot under the lighting circumstances the day before just to see how your camera deals with the colour temperature. Some are more forgiving than others.
The biggest headache is going to be if either you've got mixed lighting sources: tungsten, flour, daylight and halogens all in the same environment. No amount of colour correction is going to help you there. if that's the case try to negotiate with the store to turn our everything but the primary lighting (normally the flours). If you have complete control of the store and they don't mind you bringing in your own lighting, do it. The kinos would be great for that. (Howver, you won't get that washed out store lighting look with that)
If you put daylight balanced kinos into an enviroment that is already lit with various tungsten sources you will create more problems that you'll solve. Most retail environments want minimal instrusion with equipment and personnel, so I'd white balance with the light you've got and try to keep all the action under one kind of light source.
One other thing, that I've only ever come across on the Mexico shoot, check with the store management that they don't have an automated lighting system that switches the lights on and off at regulate intervals. You bee amazed at just how annoying finding that our can be half way through a shoot.
Oh, and don't forget that in most circumstances a reflector is your best friend for regulating light.
Good luck with the project