Balance 20 and Balance 1 Core VPN (NEWBEI)

I have a home office with a balance 20 and 3 WANS. I am setting up a remote office with a Balance One and 2 WANS.

I would like the remote user to have access to the home office lan as if they were on the local network.

Can I run speed fusion (with Bonding) for the remote connection to the home office?

Do I have to use the cloud? or can I get data aggregation merely between to Speedfusion capable Peplink devices?