I hope these help, it’s been a few years and this 30 year old basic beach house is hardy plank not weatherboard so we could have gone neutral to hide that but I wanted to something more fun. We are 400m from the beach overlooking the bay and valley and I like that it’s fresh and different without trying to hard. We invested a lot refurbishing, new mill board deck, complete interiors and so on.

Unfortunately white is not just white any-more there are so many whites. As the grey you have selected is a "medium" grey not to light / not too dark. I would go for a crisp clean white. I don't have any names but I would not go for a white with any slight tinting. Make both colours strong in their own right.

Love your house and especially white houses, I guess if you live on a busy road or dusty climate it will show more dirt, along with that which comes from rain, you'll just have to think of it as more windows to clean. A good hose down with something that paint pro's would suggest every now and then would take care of any staining. Some of my favourites The most famous, just shows that white houses have been around for a very long time, ageless cheers

Hi. Dulux Lexicon and White on White are probably the 2 safest colours to go with. Very white.