That is a good idea. I forgot all about that, it is my first build.
I forgot when I recently did my build up with a Nexus 8 and a CrossCheck. It was a little tough squirting that stuff into every little drainage holes I could find. I looked at you pictures and thought to myself, "Why didn't I do that at that stage?"
Extra tip: Carry two stubby 15mm wrenches (I got mine at Sears) and tire fixes won't be too much trouble. Practice removing the rear wheel at home in good light a few times so it won't be a pain when out on the road.
I hope you enjoy it. I'm liking mine so far.