Hi bluejay, indeed, you'd need a 23-23.5 which La Sportiva doesn't make in this model. I'd suggest looking at the Dynafit TLT6 or Atomic Backland boots which are in the same class.
Hi biggb, you want the 105s, which are slightly wider than advertised to accommodate the extra width near the toe piece on a typical shaped ski.
Hi Sam, the chart is pretty accurate for these. They maybe run a touch small if your comparing to alpine ski boots with a similar mondo size, but using the shoe size on the chart works fairly well.
Hi Zach, yes the shovel and blade fit into both the old Rapid 260s and the newer Rapid Racing packs. It's approaching the limit of the packs, so you can see a bump near the top from the handle within.
Unfortunately not, Craig, the hole pattern is different on the Guides.