Hi DK, that pickguard looks sensational well done, I can only imagine how many hours went into it !
I'll be in Townsville 9-14th July for the V8 Supercars so may even pay a visit if I can get to your place. I'll be staying on the southern side of Castle Hill (can't remember the suburb)
As for timbermate should cure in a few hours so overnight will be fine to sand it