I don't know anything about that company. I would just like to say I would go for the 16 inch heigh option, or taller. Anything under 14 inches I find to be a pain to work in and clean.
Also many PVC cage builders are having delays. Make sure you are aware if there is a wait and how long that may be.
I would check local too as you may find a used one for sale that's ready to go.