Hi!
Our DD is just turned 5 and is being skipped to 1st with subject accel in math and LA. This is the max allowed. In this school district, there is actually a heavy trend towards "red-shirting", meaning some of the kids in her class next year will turn 8. That is a 2.5-3 year difference, as she will only be not quite 5.5 in the fall when we start. I know it is a big adjustment, but hang in there. No amount of "age difference" will solve the differences in how your child learns, behaves and thinks. We have learned that the hard way. I thought our DD would "get along" better with older kids, but they can be just as callous and immature as the toddlers she didn't get along with...just in different ways. The best thing is to make sure she is strong in her own self-concept, and has some appropriate "stock" answers. I am watching this next year like a hawk. If I detect that she is being bullied, it will be addressed. If it is not, then we have no qualms about homeschooling. Good luck!
AL