CMS in Ecommerce

Hi,
we currently use Webflow CMS. Our products are described within a CMS collection. We now want to move to Webflow eCommerce so that the products can be bought directly via a shop. From what I saw we can enable eCommerce for building by clicking on the shopping cart in the designer. The following dialogue appears:
Bildschirmfoto 2020-09-09 um 09.56.57
We now have the following question:
Do we have to move to the eCommerce plan before being finished with building our shop to still be able to publish new content in our existing CMS collections?
Thanks in advance!
Thomas