Good points. You got an upvote from me! But there's a key point you're missing here I think - a proper light schedule. You touched on it briefly under "A good resting area," but there's more to it.
One of our doctors, Pat Nardini, ND, wrote an article on the subject which is posted on our blog here. Check it out: https://steemit.com/health/@csmedia/the-benefits-of-sunlight-more-than-just-for-vitamin-d