I am trying to use a program called SRWall to design a mechanically stabilized earth retaining wall with gabion facing. The soil will be reinforced with 12 Gage PVC coated welded wire in a 3"x3" grid. There are several input values in the program that I am struggling to nail down. I am wondering if anyone can point me to a good resource for some of these values:

Geosynthetic:
Ultimate Tensile Strength of the Wire
RFcr: Reduction Factor for Creep of the geosynthetic product.
RFd: Reduction Factor for Durability of the geosynthetic product.
Ci: Coefficient of Pullout Interaction of the geosynthetic product.
Cds: Coefficient of Direct Sliding of the geosynthetic product.

Unit to Unit Interface Properties:
Minimum Shear Capacity: Minimum shear strength. This is also 'Y' intercept on the Unit-Unit shear plot.
Shear Friction Angle: The equivalent angle that defines the slope of the Unit-Unit shear plot
Maximum Shear Capacity: Maximum shear strength.

Geosynthetic-Unit Interface Properties:
Min Connection Capacity
Normal Load [IP-1]
Connection Capacity [IP-1]
Normal Load [IP-2]
Max Conn. Capacity [IP-2]
Min Shear Capacity
Friction Angle
Max Shear Capacity

The soil will be processed on site soils, and the soils at this site are highly variable, so I would like to use the lower range of values to be conservative.

Does anyone have experience with this program or have a suggestion for a resource I could use to determine the correct values for the design? Thanks.