This is some damn fine modelling. So what about the age of the kit? Model as you wish. I am no engineer and use the rule of thumb: "I like it."
The canopy masking is one area that gets my goat. Pre-cut masks are expensive and, of course, must match the kit manufacturer. I brush mine, acrylic undercoat then enamel top coat. Doesn't take long because I don't mask the entire canopy in one go. I simply do the frames going one way, tape either side, and when that is done, do the frames going the other way.
No messy cutting and trimming. No scratches from a slipped blade. I have a Junkers 88 canopy, moulded by yours truly, to mask today and feel no trepidation whatsoever, it is just another part of the model.
Cheers,
Karl.