Fix Website For Subscription Box Product

I used to have my website on Shopify - but I now host it on Squarespace due to the fact I wanted to have a middle page - where I collect emails (to nurture customers) and then automatically redirect to price page. This wasn't possible on Shopify but I found it easy to set up on Squarespace. The only thing is my website is now significantly less visually appealing on Squarespace than what it was on Shopify. To make matters even more confusing, I do the checkout via Subbly to manage the subscriptions. The price page on Squarespace has the pictures of products which are linked to the Subbly checkout. Anyway if someone can please help me with your recommendations for the best website to host this on ensuring I have the setup as follows: 1. Website home page (no prices shown), with button to SAVE 25% 2. Button Links to middle page to collect email addresses, then auto redirects to price page. 3. Then one click checkout (Can you speed up the checkout on Shopify?) If you recommend Squarespace, the framework is there, I just need someone to make the website look pretty If you recommend Shopify, the framework is there, I just need the middle subscribe page with the autodirect to the price page If you recommend Subbly, the framework is there, I just need the website completed / make the website look pretty. Thank you so much. Happy to negotiate a price based on recommendations / work needed.