Not really an ignorant question because it is a question that deals with many issues that people continuously struggle with. The problem is that you're in cold temperatures, yet producing heat and moisture (which is not good) while exerting a lot of energy.
Its often a thin line to walk.
You have the basic idea down: minimal layers that breathe, which helps minimize excess moisture forming in the first place, and when it does, helps move it away from the skin to dry. Depending on temps, you'll want an insulating layer--vest or jacket--to help keep you warm while stopped. However, even when stopped, you may actually not need to don any extra layers. It all depends on conditions, and how long you stop. Your body is a heat producing machine!
Use the windshirt only when necessary. Again, depending on conditions, certain fleeces are all that's needed. As far as your lower body goes, you generally need less insulation than your torso. When temps are just below freezing, you can probably do well with a pair of regular nylon hiking pants, and an insulated pair of pants for extended breaks/stops. When I hike with temps below 20F, I wear a pair of powerstretch tights and my regular thin nylon hiking pants. Usually they're ok, rarely too cold, but once in a while a bit too warm. I don't need to ever wear more insulation except when more sedentary in camp with temps in the teens.
DWR isn't really needed on clothing if temps will stay below freezing. It gets a little more complicated when you get a mix of slop and frozen precip. That being said, I do enjoy being able to crawl under my tarp in the snow with pants that can handle such abuse without wetting through.
As I'm typing this, I just reread your OP that said a "trek of a few hours." Much depends on actual conditions, but a thin base layer, fleece top, nylon pants, and an insulating jacket should be fine for a few hours.
Hope this helps.