Planning Nathan's Social Activities

I tried to come up with a clever title for this one, but I'm running a blank.

For the past few years, we've had Nathan in Beavers with Scouts Canada.  I initially signed him up to give him more social experience outside of school.  Since Beavers runs for 8 months with a weekly meeting and regular weekend activities, I thought it would be a good, consistent option for him.

So far, it's been exactly as I hoped.  It's given him a chance to practice paying attention, waiting his turn and social interactions with his peers.  He's been able to join in the pre-meeting games and the leaders tell me that he does well with the activities.

Next year, Nathan will transition to Cubs, which is more organized and requires more independent action.  They also have more extra-meeting activities. 

This is where my concern comes in.  The reasons it would be good for Nathan still stand (especially since he likes it).  However, the time commitment makes it hard for him to try other activities (such as dance or gymnastics class, or art classes). 

I'm struggling somewhat with the decision.  Is it better to go for consistency or to allow him to explore different facets of his interests?  The City of Ottawa classes go 8 weeks, so that's a lot of schedule changes throughout the year.

I have a few months to make the decision.  Right now, I'm leaning towards giving Cubs a try at least since I think it will be much harder to transition back into Cubs than to transition out if it's not working.