Post-Purchase Redirection & Order Confirmation Page Customization - Shopify

We are looking to customize our order confirmation page on our Shopify. There are 2 ways of achieving the desired result. Method 1 is preferred. Method 1 Customize order confirmation page to include a post-purchase upsell offer for a digital product called Curl College (which is hosted on Kajabi). We would need to have the ability to fully customize the Shopify order confirmation page to include the order details, a video to introduce Curl College along with some corresponding copy, a call to action to begin the 2 week free trial of Curl College, and a call to action to return to home. If a user opts to begin the 2 week free trial of Curl College by clicking the call to action on the order confirmation page, he/she will be redirected to a user signup page where they could create an account/login for Curl College on Kajabi and see the terms of the free trial offer, which includes a free 2-week trial to Curl College. After the 2 week free trial, they are automatically charged for Curl College using the payment information used in Shopify checkout. If a user doesn’t opt to begin the 2 week free trial of Curl College, they can have the ability to either stay on the order confirmation page or click the call to action to return to home. With method 1, the candidate will customize the order confirmation page. My internal team will create the page on Kajabi that the user is redirected to. Method 2 After a user checks out on Shopify and reaches the order confirmation page, he or she will be automatically redirected to a different page (hosted on ClickFunnel). This redirection needs to be created in a manner where Google Analytics conversion goals aren’t affected by the redirection from the order confirmation page. On the order confirmation page there should be a count-down timer that informs the user that they will be redirected to a different page with a limited-time offer to receive a 2-week free trial of Curl College. All the necessary info to begin the 2-week free trial of Curl College will be provided on the ClickFunnel page, including the terms of the free trial, form to sign-up to a free trial of Curl College, and form to submit payment information for the free trial. With method 2, the candidate will customize the order confirmation page and my team will create the ClickFunnel page.