I am trying to research what extracurricular activities are most valuable for grade school aged children and really not finding anything that's compelling.  I have a few months before I have to choose, so I am trying to spend the time finding reasons *why* to choose one over another. 

We homeschool and live in a an area where there are no day classes offered for such things.  As such, I have to select what we can do based on how times overlap.  For instance, we cannot do the dance classes we have been doing and find a workable situation to take music lessons for all the kids.  I don't have other people to assist in transportation currently as my spouse has to work on call.  He usually is available, but I can't really plan for that, as last minute he may not be.  

I want then to do at least a foreign language and am thinking that is of more value than dance long term.  I can make language lessons with music lessons if dance is out.  The concern in dropping dance is that it is more social than either of the others and they enjoy it and have friends there now.  None of them show any interest in any sports either, so it's the only physical activity any of them have other than general playing, bikes, etc.
 
The biggest obstacle is that everything starts at 6pm or later and with different kids at different levels, it's hard to coordinate and I can't seem to find a way to make all 3 types of the classes work.  So we need to decide what will be most beneficial and when I research that, I am not finding anything definitive.  So I know it will be opinion, but I thought perhaps those that have taken such classes (I never did) or have raised kids that may have taken them, might offer their experience to what they felt was the most benefit.  Putting them into school wouldn't make any difference either as none of this is available in our local schools at their ages.