Hello ....
First - Thank you , this is a good question that a lot of people really don't understand. You asked if your domain name was important for SEO ? Yes it is - as to what degree of importance the search engines put on a domain name is not exactly known, by ANYONE outside of the master vault at Google.
More important is the Human Factor - Someone types in your search term and page one shows up and you have some really cute , artsy-fartsy name that nobody but you understands, they will go somewhere else. ....