Configure Multi WAN with pfSense -- 2

1. We have two DSL and a LTE WAN connections to the internet in our office. 2. pfSense should be installed in the office and on a VPS at a provider in the internet. 3. The psSense will in the VPS at the provider will have a static public IP. 4. All our WAN connections should be bonded. 5. Our internet traffic should be send through the bonded connection. This bonding should not only work as a load balancing per connection. The bonded bandwidth should be available and used e.g. for a single download data-connection. 6. For inbound traffic we need port-forwarding / reverse proxy. The VPS therefor will receive further static pubic IPs. 7. The load of the WAN-connection needs to be dynamically detected. The load-balancing has to use WAN-connections based on the the dynamic measurement. 8. If both DSL lines are online, LTE should only be used for data upload. LTE should work as "upload-boost". If the DSL-connections are interrupted, LTE should be used for up- and download.