Witch port is best for WAN on RB1100AH!!??

Guys,
I need help with RB1100AH, I need the below setup
1 port WAN
1 port LAN >>Local DHCP Sever
PPPOE server
The rest ports use as switch .
I get confused from where to start, how can I use ports 11-12-13 ???
1-5 is first switch group
6-10 is second switch group
May I use jumper cable to switch the group for examp. from 5 to 6??
Witch port is best for WAN??

Thank you in advance,
Nikos

Port 11 is connected to the network processor via the same type interface as the two Atheros switch chips which support ports 1-5 & 6-10, whereas ports 12 & 13 are connected via PCIe interfaces.

Ports 11 & 12 can be configured to failover (essentially join together at Level1) and port 13 can support POE.

In the absence of any failover / POE reason to do otherwise port 11 is probably a good WAN candidate.

Concur !!