Hello,
We think that your solution is to create your own zone, from Main HikaShop Configuration, in System dropdown => Zones.
And note that by clicking on the button "Help" to display relative tutorial to zones edition.
You have to create a sub-zone and associated it to the required zone (main zone).
And then, you will be able to restrict your shipping method, if I follow you well you have to create 2 shipping method with each one his own price/fee.
Hope this will help you to achieved your needs?
Regards