Will you keep it red if it's red?
I wouldn't do the grey/white with a red roof
If you want to keep it simple use full strength Silkwort or full strength Brume outside insted of Miller Mood.
Love the grey & white exterior colours. What colour will the roof be?
Inside go 1/4 Brume, 1/4 White Duck or 1/2 Silk Wort (is that the grey outside) with 1/2 Lexicon on the trim (same as outside)