Nice ideas - I think you are on the right track

You can use what basically looks like contact paper (i.e. the stuff used to cover books in primary school) to make clear glass windows look frosted. Something like this from Bunnings: http://www.bunnings.com.au/handi-home-900mm-2m-plain-frosted-decorative-window-film_p3960052 However, you may want to talk to your builder first as they may be able to replace the glass in the front door for a decent price.

I say go for it as your door is the window to your home. My advice would be to consider the colour of the flecks in your brick to make sure your chosen colour works with it and not to forget about the colour of your roof and window frames. For example I would have loved a red door but it would have looked ghastly with the green roof on my 25 year-old house. Instead I did black with dark grey window frames (which truly just look black) which works to pick up the black in the brick. I added my big pot plants with green foliage and still got a touch of red in the form of an old chair I picked up from an op shop years ago. The entrance is welcoming, attractive and reflects what is waiting inside. Have fun and if your chosen colour isn't quite right do what I did and find a way of incorporating it into the scheme somehow.

Just a few thoughts. I like the overall concept of the kitchen but it is rather disjointed. I agree with clearing everything off the surfaces and trying to keep them free miss a feature bowl for the island. You could add an eating area as this would make it more purposeful but I would not do it if it compromised the size and functionality of your living area. The piece of timber joining the two walls at the entrance seems superfluous and I if was removed it would instantly look more contemporary. You could extend those walls up to the height of the cabinets and repaint in a lighter colour. This could reduce your light but this can be dealt with in other ways. I love wood cabinets but the top ones up look heavy- perhaps they could be painted a light colour to reflect the light coming in from the entrance but I would revisit your lighting in general. There is a lot of timber with the floor, cabinets and ceiling and this makes the space quite dark? if you did extend your walls you might find the kitchen darker so paint cabinets. I like the idea of wallpaper but only if you have an even shaped wall and if the pattern works with your living scheme. Whatever you do with your walls will need to correspond with the adjacent entrance walls. You didn't mention your budget but I would start at the simple end and if it doesn't give you the result you want move to the more complex solutions. All the best