Set up recurring PayPal payments for my Wordpress site

General information for the website: Childrenswear subscription service
Kind of development: Customization of existing website
Description of requirements/features: ****Priority #1******
1. Set up recurring PayPal payments

http://adleroflondon.com/cart/
2. OPEN ISSUE - The buttons at the bottom of the page are overlapping when you have items in your cart. "Apply discount", "Update cart", "Proceed to checkout". They need to be spaced out.

3. OPEN ISSUE - Can the "sign in" button on the top menu be changed so when you are not signed in it says "SIGN IN", and when you are signed in it says "MY ACCOUNT"?

http://adleroflondon.com/product/subscription/
4. OPEN ISSUE - Change "go to checkout" button so it says "ADD TO BASKET" and goes to http://adleroflondon.com/cart/ instead of http://adleroflondon.com/checkout/
5. OPEN ISSUE - Bug on the subscription builder page after making the Date of Birth field mandatory. Bug details below:
1. Choose Deluxe package size and Quarterly, but do not indicate DOB. Total should be 55GBP/3 months.
2. Click "Go to Checkout" button
3. Page reloads with error telling customer that DOB field is mandatory
4. Input my DOB and scroll down the page
5. Deluxe package size and Quarterly delivery boxes are still checked, but price shows up as 37GBP/3 months.
6. Click "Go to Checkout" button again
7. Cart has order with wrong price of 37GBP/3 months even though they have selected Deluxe, which should be 55GBP.
Extra notes: