I think One page per topic would be very nice But there is nothing really wrong with the current setup. Part number is probably most helpful.
Here is an example of how I would approach.
Page 1
Armor
Bumper/Grill/Brush Guard
-options-
Front Suspension Guard*
-options-
Belly Guard*
-options
Transfer Case
-options
Differential/Driveshaft/CVJoint Prottection and/or Skids**
-options-
Fuel Tank Skid**
-options-
Rock Sliders**
-options-
Rear/Bumper Protection**
-options-
* Basic Required Protection
** Premium or Advanced Protection
You could rank them how you see fit - Most people's perception of what they feel are basic necessities for skids will differ based on experience, and the type of wheeling they do.