To remake the website with the Bitrix way of ordering

the Task for 3-5 hours, for the programmer Bitrix.
You need to take the existing sequence of steps of placing the order on the website and to make each individual step was a separate html page with its own unique name, which you can embed the counter.
Also make the opportunity at any step press the "back" and return to the previous step without losing the data basket.

Now when you change the page address does not change. Not possible to embed the counter on each step. When you try to return to the previous step fails,/reset basket.

If want to accomplish our goal, write to:
1) are you ready to perform the task in 1 day?
2) describe in your own words the experience of programming in Bitrix