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Which file are you using to load the extensions?

If it’s a plugin, have you tried a simple include based on whether the group in question is being viewed?

Maybe using something like:

if ( bp_is_groups_component() && 'my-group' == bp_current_item() ) :

Cool, a 4 year old thread that is still useful.

minor stuff:
You don’t need the $bp global
I’d put the foreach in the ‘if ( $group_id == 1 )’ conditional

I’m a bit surprised that it runs on ‘init’ rather than bp_loaded or bp_init because init seems very early – but the load order in some situations still surprises me.