Congratulations! (I have a 1.5 story cape would love a ranch like yours) Take the shutters of the bow window. With white any color goes. Hang them with shutter dogs for more authentic look.
Exterior Shutters - Seaport Shutter | Seaport Shutter
Hardware Options & Shutter Dogs - Seaport Shutter | Seaport Shutter
I like the green, but all would look great. Because there are only 2 pairs of shutters, I would paint the front door to match.
AS for landscaping go to a local nursey for advice for plants that work in your area and help with a design
Add a row of windows to the garage door to break upthe sollid white
Q