Switching domain to SQSP from a hosted wordpress site

Hello,

I currently have a domain purchased through Domains.com, and I also purchased Google workspace through them and have my custom email set up.

I was originally attempting to create my website on Wordpress, and my website is currently by Hostinger. I have a Wordpress theme installed, so if you visit my web address there is a site up, but it's not completed.

I would like everything to be created through Squarespace now, so can anyone advise if it is a straightforward process to 'disconnect' from Hostinger/Wordpress?

Also, if Google workspace was purchased via Domains.com is it still going to work independently of that, if I were to connect/transfer my domain to Squarespace?

Last question: is it worth transferring the domain to Squarespace, or should I just stick to connecting?

Thanks in advance!

Nina