Congratulations! It takes most skiers decades of struggle before getting what you have now. And, FWIW, $400 seems like a good price for what you got. Well played!
The shells should last more than twice as long as the liners. When you have packed out the liners (50+ ski days) you can upgrade to "stiffer" liners so the boots will "grow" with you.
Oh, and thanks for the report, we give lots of advice here and rarely get feedback, feels good. Don't forget to let us know how they work on the hill.