Mark, that looks fabulous! Henry and his co-workers will love it. The font looks challenging, especially the thin inner part of the N and U.
I had some of those silicon wafers from a job long ago, haven't seen them for years and doubt that I still have them. But I do remember how delicate they are.
I see a possible problem with one part of your finishing plan, the part where you save the resin pouring till last. Resin can be a challenging material to work with. I suggest you practice on scrap material until you are comfortable with it and the process.
TJ Brown has an article in the "How To" section of the Scroll Saw Village forum. Check that out.
Resin is a liquid (before it sets) and likes to run everywhere, especially through any gaps, however small, between the project piece and the backer, but also into the grain of the wood itself. That is messy enough in and of itself, but when you pour the resin ever so carefully to be precisely level with the surface of the finished work, then any leak will result in the level of the resin dropping and no longer be level with the surface.
Choose your resin carefully. Resin makes bubbles which look awful in the finished work. And the dried wood has air in its fibers which leak out into the resin as bubbles. Fast setting resin doesn't leak so much but does capture the bubbles. Slower setting resin leaks more but gives the bubbles time to resolve. Many how-to articles talk about ways to deal with the bubbles.
I will stop rambling now, but strongly encourage you to practice before putting the resin in the finished project.