Bee, I agree that it's worth putting together a portfolio for your ds even if he isn't ultimately accepted to DYS or if you don't even bother applying. It will give you a chance to think through his areas of strength and give you a record you can use when you advocate for him in other situations as the years go by - and you won't find yourself another few years down the road wishing you'd captured something he's doing now similar to how you wished you'd videotaped the Beowulf at 4. DYS is one program - there are other opportunities out there that you'll find too!
Good luck,
polarbear
eta - re the achievement scores, just a quick note - your ds' coding score is relatively low on the WISC - whatever impacted that score most likely impacted his scores on the achievement tests labelled "fluency" - so those scores may be artificially low (ie, if they weren't timed or he didn't have to answer using handwriting, he may have had higher scores on them).
