I can dig it

Pictures always help to explain things, as it can be difficult to use the terminology everyone will recognise.
As for the gap...
You are the artist, that is your canvas, if you think it looks good with X distance then you are correct. If you want opinions on your work, finish it, then post pictures asking specific questions.
I have seen cabs with the glass bezel flush against the monitor bezel, and I have seen cabs where the glass bezel was at one angle and the monitor and bezel were at a different angle, so they were only flush at the very bottom.
Groovy?
Craig