For both sites, the Indigo Subscription 2 option at £50 per year seems like the most appropriate package.
I've made it possible for you to buy the same subscription twice. Please just make a purchase and then go back and purchase it again.
I would suggest that maybe for the smaller site, you might want to just remove the copyright notice using CSS for now. We have options for that in our Install and Upgrade by Waindigo add-on (you don't have to have any of the callbacks enabled). For such a small site, it might not be worth spending £50 a year on branding removal, especially if you don't need any premium features. Obviously that is up to you though.