Colo load balance solution to my problem - potentially with VPN as well

[lfstudios10]

I'm getting a pretty decent rate at a Colo facility but the speeds aren't the best.  Due to the way it's structured I actually have two connections, each of which has, more-or-less, 100meg symmetrical.  My office has 1gig symmetrical.  We have a Fortigate at our office and we will be putting another in the Colo.  What are anyone's thoughts about creating two VPNs, one from each connection at my Colo to my office and then load balancing/aggregating them?  How would one go about doing this?

[xshkurti]

@lfstudios10 
I suggest you use SDWAN with ipsec vpn for load balancing

Technical Tip: Configure IPsec VPN with SD-WAN - Fortinet Community

[lfstudios10]

I will have to look into this.  Another complication: the multiple connections each have a 33TB outbound limit per month before I get charged more.  Would I be able to inform the Fortigate of this somehow in order to allow it to first use 33TB of EACH WAN before using more?