Modifications In Karenderia App

Hi we need a developer to make some changes to the Karenderia App.
Skills: Php, Yii Framework, Java, Cordova and PhoneGap
1. Coupon window:
This window shows all available coupons and those that have expired.
The customer may copy the coupon to redeem it.
2. Modification of the order tracking: We need to modify the trackin window, adding the status, details and a chat that must be enabled when the driver accepts the order.
3. Modify the payment methods window:
You need to modify the buttons of the payment modes.
4. Offline payment:
You need to add a new payment method, this payment method is similar to cash payment, only it tells the user some instructions to perform.
5. Currier Category:
You need to create a courier category. Where the user enters two locations and enters instructions.
You will be charged according to the distance in Kilometers. We have to set the cost of each kilometer from the backEnd. For the system to calculate the cost.