Good plan!
I would ask for accomidation ASAP, because
1) stomachaches
2) constant complaints in an easygoing kid
3) not much new seems to get done during spring fever, which lasts from about now until the end of the school year, so now is a great time for subject accelerations to test the waters for next year...a full skip if you can get one.

How is the handwriting and written production?

Grinity

Coaching available, at SchoolSuccessSolutions.com