Create conditional logic in checkout page

We sell products through our Woocommerce store with recurring payment option. Step 1 of the payment option is to inset address, contact and payment details. As payment options in step 1 the customer can selection "Monthly" or "One time". IF they select "One time", the checkout should proceed as usual. IF they select "Monthly" and click "Proceed", they should be redirected to step 2 which has the recurring payment plugin. It's important that all the address and contact detail should be stored from step 1 at this point, and that the price of their product is showing the the recurring plugin. Step 2 will allow the user to choose the interval, and once they click order they will be directed to the payment page (this is already working) So what I would like to have created is the logic that IF user selects "Monthly" THEN go save address + contact details and go to step 2. Price of step 1 should be displayed in the recurring plugin. ELSE IF user selects "One time" and clicks "Proceed" (same Proceed button), normal payment procedure continues. Looking for someone that can implement this logic, payment function is working fine already.