Pursue acquisition of the most valuable domain, accept the hyphenated variant (with SEO and memorability cost), or use the unusual TLD (workable).
Why this matters
Three domains are owned (lore-door.com, loredoor.net, possibly others). The loredoor.com domain — meaningfully more valuable than the alternatives — is owned by someone else.
Decision needed: pursue acquisition of loredoor.com, accept the hyphenated lore-door.com (real SEO and memorability cost), or use loredoor.net (unusual TLD but workable). Decision affects all marketing, brand work, and the URL examples in Entry 001.