Keep facebook accounts secure

I'm looking to build hundreds of FB profiles in a small country.

I'm looking to grow them to 5k friends each, and make them post to 10 groups in the morning, 10 in the afternoon with MassPlanner. I'd use the account actions & bump module of MassPlanner to make them look real.

What safety mesures can I do to not get them banned?

i think its much difficult today if you want as compare to some month back, use paid VPN/Proxy for making each account

Change the IP for every account you create...it's the only advice I can give you, but you may still end up in trouble if something goes wrong.