magento (social login + coupon code issue fix + google invisible recaptcha in contact us)

I have magneto 1.9.4.0, and I need to do the following : 1. Add social login (Facebook + Instagram + Twitter + Google) in existing (signup page, login page and one step checkout page). Full control is required 2. Fix the magneto coupon code issue for uncompleted order ( coupon code shall be available for reuse when order is cancelled ) 3. Adding google invisible recaptcha in contact us page Note: No magneto core files edit are allowed. Modification shall not be affected when updating to latest magento 1 version