Modify Woocommerce Plugin

I want to make hotel coupon discount website using wordpress + woocommerce and using Group Buy plugin. URL : [login to view URL] So, to know the project, you must see first the url that I give to know what the current function can do and the documentation. Now, there's a couple of things that I want to add.. From wordpress modification: 1. Menu Hotel ( Can add, edit, remove hotel ). The detail : hotel name, hotel contact email, hotel phone number, hotel stars, location, description 2. Integrate this menu with Group Buy plugin ( I will explain below ) 3. When user get in to the site, make them register first.. If not, they can't see the products and can't navigate.. ( Just use simple black transparent layer for this and ask them to login / register to woocommerce ) Group Buy Plugin: 1. From Group Buy ( When add product to woocommerce ), there's an option to choose the hotel which will be shown in the frontend detail product page. 2. In Report Lists of Woocommerce Group Buy sales section, at every order should have "send email" to the hotel. If clicked, just show popup like form email with subject and description, and if press send, then it will be sent to hotel email contact. 3. Add features to Group Buy plugin ( on add product to woocommerce ), expiry time of the coupon usage... For example, if I ( admin ) set the value is 60 days, it will give time to the coupon that have been bought by the user to use.. If the user use the coupon after 60 days after bought the coupon, it will be disabled ( From the user status, it will just disabled/can't be used .. See "My Group Buy" in the documentation ). And of course this information will be shown to the user in product page and my group buy page. 4. Another feature to Group Buy plugin ( on add product to woocommerce ), field named "code". This field has 2 option : "Manual" and "Random".. When "Manual" is choosen, admin add the "code" manually ( string type and text field ). When choose random, there's nothing to do. And, what actually this code feature for? It will be shown in the email when user already bought the coupon and pay for it.. ( Yes that's right, you must make this integrate to email template in Group Buy plugin so the code will be shown in the email to user ). If admin choose "Manual" code, it will give every user that bought the coupon the same code ( which is added by admin ). If admin choose "Random" code, every user that bought that coupon will get different code for each ticket ( With this explanation, you'll know that my point number 2 [ Report Lists send email feature ] will also need to add the code that related to each sale in the email form and send the email with code included. What will I provide: 1. Wordpress installation 2. Group buy plugin installation 3. Give you admin access to the wordpress 4. Give you FTP to the wordpress code 5. Database sql 6. Wordpress & Plugin installed files in zip What you'll need to do by your self that I can't give you: You'll need to make sql file to add table by your self ( what I mean is, you must setup the wordpress woocommerce to your localhost and develope the plugin in your pc, and every sql needed to be added, you must take a note of it so you can give me and I'll add to the server by my self.. I know you can do it via php code, but it makes you hard to check everything. That's why I give you the files and database so you can develope easily in your computer and just give sql that needed to me. Deadline: 31 January 2018 Note: 1. Please type "IMNOTBOT" at the first sentences, so I know you're not bot. 2. If you can't finish it by the deadline, declare your own date to finish this. I still prefer the one who can finish within the deadline. 3. Give reasonable price.. yes, I want you to speak up your price for this.. 4. Because the project is in tight time, I need you to give me the report of your work every 2 days to make sure you'll getting done by the time..