I have finally bitten the bullet and decided to migrate to Squarespace 7. This is a cumbersome process, and things might look a bit odd here in the next few weeks. If all goes well, links won't change, the migration of the URL (and my new domain) will work seamlessly. Ultimately this site will be discontinued, but you shouldn't fell the change, except marvel in the new and professional template design.
That is, if things go well.