You could certainly try the portfolio option and see what happens. The DYS requirements are 145 FSIQ, GAI or Verbal or Perceptual Reasoning on the WISC. For the achievement, you would need 145 on broad reading, math or language or total achievement. It looks like your test was only the brief scores? Do you have broad scores as well?
To be very, very honest, I think you would have a hard time right now with DYS acceptance. The DYS application requires you to submit any and all scores that you have, so you would need to send these achievement scores in along with the portfolio if you're being honest. I have known several people and seen others here come by with IQ scores that were in the 150+ and achievement scores that were in the 143-144 range that were asked to provide additional information.
For a portfolio, they are looking for work that demonstrates depth and achievement at least 2-3 grade levels above the child's current grade. You can submit videos for sure!
You do have a puzzle certainly, and a kid that at least right now, looks like a bit of an underachiever.
