Help:routing to 10.0.0.0/24: 1st route via lan ip 2nd route via vpn

[scurry7]

Hello all,
My objective is my 10.7.0.0/16 network needs to route to 10.0.0.0/24, I have two ways that it can get there: point to point via different device and pfsense vpn. I'd like to have  failover or load balancing if possible (or however you can recommend).

devices:
pfsense - 1static wan ip (internet)
          - 1 lan (3 vlans) opt3(vLAN70):10.7.1.1
adtran router - 10.7.1.3

1 route to 10.0.0.0/24 via 10.7.1.3 (its a adtran router on a private point2point t1 circuit plugged into an adtran router)
1 route to 10.0.0.0/24 via pfsense vpn

my preferred route is via 10.7.1.3 (so traffic to 10.0.0.0/24 does not hog all internet bandwidth), but how can I also incorporate the vpn (incase the circuit plugged into adtran router goes down)?

currently how I have it setup:
I have the vpn tested and working, but disabled in pfsense.  I have a static route of 10.0.0.0/24 via 10.7.1.3.  when I enable the vpn it routes through the vpn (So i keep it disabled until I cannot route via 10.7.1.3, then manually enable the vpn).
Any recommendations?