Do not put a light bar on top of the windshield. As you mentioned you get glare from dust on the windshield and reflection from the hood; my experience it actually makes it harder to see, which is the opposite goal of any lights. Higher lights definitely help illuminate the back side of bumps though, so if you do decide more downrange light is something you'd like to explore, I'd get a light hoop at the back of the cab. Pretty sure SVC makes one.
I know you said you were good with downrange light, but I brought it up because most ditch lights I've seen are mounted at the back of the cab as well. Since you aren't doing spots on the A pillar currently, I would assume turning those out would work fine. I think the better solution is back of the cab though.
I can't seem to find the light hoop on their website, but I know SVC made one for a while. It is pictured in the Gen1 Baja Bumper photos:
The SVV Offroad Baja Front Bumper for the Ford Raptor is a low profile sleek race style bumper with huge approach angle that bolts directly onto your existing 2010-2014 Gen 1 Ford Raptor. Cut frame horns and accepts a wide variety of LED Light combinations. The sleekest aftermarket bumper for...
svcoffroad.com
You can see in the third picture, the cube lights (Rigid D2s or something) pointing off to the side. You might have to call to see if they can still make them.