Experienced Woocomerce and Gravity Forms Developer needed - Fix 1 wordpress Plugin and update another

A QUALITY woocommerce plugin expert is required for this project (and multiple future projects) so please ONLY bid if you are experienced coding woocommerce plugins and working on gravity forms plugin. Thanks! We have 2 specific custom developed plugins that work correctly on our old website, running woocomerce 2.6.14, but on our new website running woocomerce v3.0+ they do not work. The 2 plugins issues are: 1) Gravity forms custom plugin 2) Woocommerce plugin integration with gravity forms plugin More information about the job: Plugin 1) Gravity forms custom plugin (Simple plugin adds a new type of field to gravity forms called "Choice" that allows a yes/no option to be entered with custom text for the "wrong" and "correct" answers. a) CHECKS This plugin needs checking to confirm it is compatible with latest wordpress b) NEW FEATURE: It needs slight adjustment to the choices to make it clearer which option is WRONG on the backend for admin users to enter the custom text shown for WRONG answers. c) NEW FEATURE: The submit button for each form needs to be edited to allow submission only when ALL the fields are CORRECT in the whole form. so new rule for all gravity forms - IF a form contains "Choices" fields, then all the fields need to be Correct before submission is allowed. 2) Plugin 2: This second plugin is a Woocommerce plugin integration with gravity forms plugin The functionality that should occur (but is not working now in woocommerce v3.0+) a) The plugin creates a new dropdown field for EACH product variation in the admin area, that allows you to pick a specific gravity form to show. (this is working at the moment) b) We set a gravity form, in this field, for each product variation in the backend. c) When a Customer goes to a woocommerce product page, the plugin should change the "add to cart button" to 'start consultation" (it doesn't do this, possibly due to invalid woocomm selectors being used to target the buy button, by the plugin which is out of date) d) When you click "start consultation" button on a woo product , it should redirect to a page, called "consultation form" where it displays the gravity form linked to the specific product variation. e) When the gravity form is completed correctly, (all correct answers) the submit form button at the bottom of the page, when clicked should add the product variation to the cart. f) So essentially, products should only be added to the cart when a form is completed correctly. As mentioned, these plugins work on older woocommerce install, so they need updating to the latest version of woocommerce and wordpress. Future updates and maintenance: Then in future, we need to be able to contact you, to check the plugins and ensure they run smoothly into the future with new versions of wordpress, so we are looking for a long term relationship with a quality developer! Thanks.