Just caught up - it seems like you're doing really well, i checked the video out and it seems quiet enough, i always find by the time you put a face on the stand and a hood on top you've lost most the noise anyhow.
I've also had a plumbing leak - mine has been a nightmare however, i've used putty which i think has covered it but i might go get some silicone like you have and just put a bead around and push it in with my finger to really make sure i've got the bleeder!
What's happening about the lighting now? Another spot light to stop the shadows?
The wood is amazing looking by the way, looks really nice and i'm glad to see it's finally sunk - sometimes i've had wood in for months which wouldn't go down.
Sand looks good too - definately different to the stuff i was talking about but very nice all the same