I prefer off-white with black - softens it a bit. But stark white would give you a very strong contrast if that's what you prefer.

The current trim color is fine with the siding color. Black shutters and some landscaping would make the house pop more, I would leave the front door as you have there. Hope it helps.

Paint the door black and use a bright white for the trim.

By trim are you refering to the door and window frames? or shutters and door... Charcoal shutters, black door and light fixture...

HI -Love your color choices and go with the off-white . Think about adding some decorative trim around the front door and a bigger light and house number. Cute house !

The off white would be a bit more traditional just because it will soften it up a bit as the white will create a sharp contrast also being a more contemporary look. I agree with Dytecture, adding landscape, maybe putting some more color in there would look great, maybe even a window box for flowers under the left window? Very pretty house, it has great potential!