After 4 days of curing, I finally felt confident to start removing the extra silicone. After 4 grueling hours of scratching and scraping it looked like done enough for now to move into testing. There are some more bits of fine tuning left but that can wait till I am ready to start using it.
There are some bubbles here and there, but nothing seemed ominous enough right now. Fingers crossed
I did not care to remove silicone from the bottom seems because they will anyways be under the substrate and will help to keep the bottom seem joints (which takes the most pressure) stronger.
Here is the finished product. Placed it on a couple of styrofoam blocks to level and provide uniform pressure bearing surface. Now its off to testing...