Hi Ed, hope I'm not hijacking your thread it looks like you have plenty of ideas for what your doing so It shouldn't interfere with your query.
What I have to do is glue wooden laser cut frames to clear styrene like sandwich the frames between the styrene. I believe super glue has been used in the past. I saw this done on a building at the Telford (UK) O scale show back a couple of years ago and I had the window frames made up using my dimensions if I can work this out it will be great because I had the window frames made in three sizes this is the biggest and I intend to use them on a Boiler House I'm building....