Thanks all for your feedback. My son is enrolled in a "gifted" (accelerated by 2 grade-levels) program at school. His classmates are all "gifted" (> 98th percentile on school-district administered acheivement tests). He is very aware that he has the most difficulty with writing of all the kids in his class. He is also the slowest writer and has difficulty with storytelling (verbal and written). He has (thankfully) been receiving resource room help for writing even though it is not specified in his IEP. At our parent-teacher conference in the Fall, the resource room teacher and his classroom teacher both said he "clearly needs it" - meaning assistance with writing. He probably won't excel at team sports (too bad, since he'll probably be close to 7 feet tall!), but he does enjoy individual sports like cycling and swimming. My biggest concerns are his anxiety and maintaining his self-esteem.
I am hoping that my son's processing speed will improve with age. However, my husband still has slow processing and a motor-planning deficit -- although he didn't have the benefit of early intervention. It does help that my husband is able to provide an adult perspective on having these particular challenges.
Nancy