Same as Justin Ray, with one difference. i would put what you give up on the free tier above almost everything else when it comes to single sites. Most of the frustration with single sites traces back to how real the profiles are.
My experience with single sites shifted completely once I paid attention to the learning curve. Most of the frustration with single sites traces back to the free-vs-paid gap. In practice, single sites live or dies on whether it gets out of your way.
The paywall question is what separates a good week from a wasted one with single sites.
Worth testing most popular free single sites for seniors yourself for a week before deciding.