No prob, ma'am. Figured I'd mention lasagna gardening to give you an alternative option to a lot of backbreaking digging. Perhaps it might be useful in areas further away from the greenhouse.
Stones look good. You do know to keep the pavers wet while curing, yes? You can even set them in buckets of water while they do so. From what I understand, hypertufa is extremely durable ... think I read somewhere even more so than straight cement.
Oh, an another related item that you might also be aware of -- but in case you aren't -- there are dyes specifically made for cement if you wanted to play around with color. For that matter, if you or a friend are into working with stained glass or fired clay, there are a plethora of ways to dress up the pavers. Even paint can be used. The following is one of several I made for my folks years back:
That's pretty awesome, Paul! My wife wants to do pavers as a walkway for our veggie garden and it'd be awesome to make these!