How much traffic are you expecting, is this semi private or public?
If its public then you don't want to use the Duets web server function, Id look at a screen scraper that collects the data from the duet web server then reserves it over the internet, this way you limit the work the duet has to do.
RepRapPro Mendel 3 Tricolour
RepRapPro Fisher
-Carbon Arms
-Easy adjust Carriage+effector
-axis stiffness mods
HE3D -600 delta
-Duet 0.8.5
-PanelDue
-DC42 Height probe
-RobotDigg metal components
Simplyfy3D
RS Design Spark CAD