Hi, My name is Ghislain Malardier, owner of Aïkigi Web, a company dedicated to support artists online presence.
I know you mentioned that you prefers using squarespace, but in case you are open to other solution, I'd like to offer you another one.
I offer semi-managed and fully managed services which include everything you may need. It is based on Wordpress with an amazing Page builder to simplify the content editing of the website. Adding blog post, images or product to sell is very easy as well.
My fully managed services also include Hosting and maintenance of the website, which mean that I take care of everything and keep your website running and safe.
I offer two packages:
1. You pay for the design (~$650), Then $25/months for hosting + maintenance, or Just hosting starting at $4.99/months
or
2. You get my artist package which include everything (Hosting, Web Design and web maintenance). If I'm correct, a website like the one you describe would probably be around $45/month.
I hope you'll consider my proposition. If you do, I'd love to learn more about your project! You can learn more about my services on my website Aikigiweb.com.
Do not hesitate if you have any questions.
Thank you
PS: I am a newly on freelancer, but have been working on artists website for the past 6 years ;)