Was surprised they are going with Carbon Composites.
The other thing I was surprised at was RLSV "Return to the Launch Site Vehicle" and not to a barge downrange.
The 8t was impressive enough for the size of the vehicle. However, 15t max weight (not reusing the 1st stage and fully expendable) is nearly twice the weight she can launch and maxing out the engines. At 8t they be hardly working. Which when you are re-using a rocket over and over that is what you want.
The Archimedes Engine (cool name BTW) and hopefully becomes as reliable as the Rutherford Engines.