Link aggregation - load balacing with softether L3 lan to lan?

[nobody12]

I read through the forum and google, but it looks like this is somehting which is not easy to do, even not possible.
Correct?
Or:
I thought about setting up two virtual hubs on the main site, then connect those to a virtual L3 switch.
At the remote side, setup the bridge, add two connections one to wan1 of the main site one to wan2 of the main site.
But at best this might result in a kind of failover feature, but not load balancing. The worst result would be a loop because I connected two switches with two cables together without configuring LAG.

If anyone else has some insight, even it this means what I want to do is not possible, please reply.