[B.A.T.M.A.N.] Mesh network advice

Hi,

Im setting up a small mesh network of maximum 20 nodes. The network will mainly be used for sharing internet access but also perhaps for gaming and file sharing. Access will be controlled via RADIUS and a portal page.

I would like to hear your thoughts / advice on batman vs batman-advanced. I read the wiki entry on the pros and cons of batman-adv but I am still in doubt about which one to use. For instance, batman-adv doesnt have gateway support, but it has ipv6 which if I understand correctly can automatically configure gateways/routes.

For a practical scenario like mine, what is the factors I should consider when choosing between the two and which one would you suggest?

Thanks!