Hi Scolli 3412.
I think Focalin frequently results in side effects such as depression and other personality changes.
You might want to first go to simple Ritalin instead of combining focalin and ritalin. There are enough ER options that will allow you to blend the right dose and release of simple Methylphenidate. Do this before adding other meds.
Also, is he taking Strattera IN ADDITION to the others? That would be way over the top for a 10-year-old.
ADHD treatment is a marathon. Try to not go too far down the meds alley at this age.