There are a lot of options. They make lower springs than the ones you bought, so you could just get an even lower set.
You could pop out the ones you bought and chop them a little bit shorter, not the best method but it does work

You could ditch the coils altogether and get an air suspension and then you can tune your ride height to what you want with the flick of a switch.
I am sure that someone makes an adjustable coilover for your truck, those offer the same tunability but are not as easy to set as an air suspension.
I think if I were you I would take the new coils and chop them to the right size...