Has anyone had their child take the regular ACT vs. EXPLORE in 6th grade, and if so, how did your child feel about the experience?

We are looking at options for a new education path for our DD11 and thought this might help us figure a few things out....like if we homeschool where we should begin! As well as perhaps opening some doors for other opportunities. DD is a DYS, so I think she has the brain power to do OK on the full ACT, but I don't know if she will tolerate sitting still for FOUR hours of testing! Any tips on how to help prepare her for such a task?