I don't think pinning a few sprockets together will help much - you'll most likely find that the pins are either bent or snapped next time you take your cassette off.
We asked ID to specifically order them in from the US for us :)
Pretty much any sprocket will work fine on your steel driveshell Dean, but the Surly ones are gonna be your best bet. All the performance of a King Kog (well, better actually), at a much better price!