That dash is looking really nice! I especially like the way that the ends curve under, that'll look "well posh" when finished.
One suggestion i would make based on my driving experiences so far is to use bonding paste as much as you can to stop things moving about when driving and to just use very thin layers of filler on top in order to give things a bit more strength to try and resist cracking.
I only mention this as I am getting a growing list of minor cracks and marks that i'll be addressing with a respray after i rebuild the engine over the winter.
"luggage bay"! just cram it all behind your seats!