Opencart confirmation payment, unpaid payment, aftersales module, all page are connected

I wanna make confirmation payment page, unpaid payment page, aftersales page and all of them is integrated. Confirmation payment page is used for input payment details by customer (so in this page my company know which order have been paid and which is havent). it can be input from frontend and backend, but all record only can be viewed from backend, and this data insert by a form Unpaid payment page is used to record all unpaid balance which is havent paid yet, the data can be input from backend by a form or confirmation payment page can generate data automatically while my company process the order, all record only can be viewed from backend Aftersales page is used to record all deposit balance, if customer make payment over the order total, also it can be used record return product, remain product. all this data insert by a form, all record also only can be viewed from backend You can see the detail design in file I attach, I also have already made the database structure, in file i attach is used indonesia version database, but I have made the translation in english version on the database structure file, so we can develop all module through english version This only reference translation for each title on the file i attach: Konfirmasi Page = Confirmation Payment Page Kurang Page = Unpaid Payment Page Masalah Page =Aftersales Page I need the project used default opencart css, like button, form, column, font, etc. And I want all the filter section in module create like opencart, when we do filter the link generate like &order_id=1000 &shipping_name=assg , so when we click back on keyboard it will showing previous data page. And I want the module is secure ( the data cant be modified by inspect element or something like that ) I NEED THE PROJECT COMPLETE TIDY AND CLEAN, BECAUSE LATER I WILL MAKE SOME MODIFIED AND WILL HIRE YOUR TEAM AGAIN SO IF YOU MAKE CLEAN AND TIDY CODING IT WILL MAKE YOUR TEAM EASIER TO MAKE FUTURE MODIFIED, I NEED IT COMPLETE IN 1 MONTH SO I NEED A TEAM (3-5DEVELOPER) TO WORK FULL TIME (AT LEAST 5 HOURS/DAY) ON MY PROJECT, IF YOU QUALIFIED MY REQUIREMENT AND CONFIDENT CAN COMPLETE THIS PROJECT PLEASE BID