I have tried this already, but it seems that you can't replicate remote-site-id or use it more than once.
root@MX-104-5
e1# commit
[edit logical-systems pe1 routing-instances l2vpn protocols l2vpn site CE1]
'interface ge-0/0/1.193'
L2VPN/VPLS: couldn't add interface ge-0/0/1.193 because remote site ID 2 is in use by ge-0/0/1.192
error: configuration check-out failed