Is developing back end of ecommerce site in node js hard?

I am going to develop it in nodejs with mongodb.
I am absolute beginner and on a tight deadline.
Should I take the project or leave it for a while?
Also How much hard is it comparing to php and mysql

Lets say I was working on javascript and somehow got the project,
Now i am seeing a great learning oportunity in front of me which i don’t want to lose.
I think i can make it work and learn extensively in this duration.
How hard is in the sense of learning.

On a tight deadline you may be better considering an ecommerce CMS like Shopify.