The only things i noted on your lime-defaults is
option main_ipv4_address '10.%N1.0.0/16'
a /16 seems quite big for batman-adv cloud and would make it difficult to have
non overlapping subnets if in the future we decide to route ipv4 clouds
accross the tunnels, so as it seems a little overkill to me to use a big /16 i
would use something much smaller
but take this just as what i would do ;)
Cheers!