Ecommerce funnel with login option
I'm looking to set up the e-commerce tracking for a website with Google Tag Manager and Enhanced E-commerce, but my problem is that on step 2, there is a choice for the customer between login in to an existing account, creating an account, and continuing with checkout as a guest. These then lead back (after either one or two other steps) to the payment page. My question is : is there a way to track them all as part of the ecommerce funnel? Could I set several pages as 'step' : 2?
And if its not possible, how could I track the number of people who have chosen each option?
I appreciate any response, if anyone has ever had this issue!
Also, on a related but slightly different note, is it possible to set several 'option' fields to a step?