If you have some furniture to start with, I would just use the basics for now and live in your home for at least 6 months - 12 is better - and get the feel of the house, the lighting, how the rooms are affected by heat and cold, decide how you are going to live in each room and what your needs will be. This will also help you determine traffic flow, which ultimately affects how your arrange your furniture. It is amazing how many times you can change your mind during this initial period. Most importantly, create your home for YOU, not to impress others, you are the one living in it and happiness comes from the peace and contentment you feel in your surroundings. In the meantime, look through photos on Houzz for ideas, save them in your ideas book for reference and use this to build your decorating.

Can you do anything with shelves on the blank or door walls? Are the cupboards a built in wardrobe, or is there capacity to put your chest of drawers contents either on shelves or in baskets in the cupboards? Is there room for a freestanding hanging rack of some sort if there is no wardrobe hanging option? Pics would help!

Sorry i missed this - did you pick somehting already (It was a MONTH ago!)

I like the grey best for reasons stated above. The 'busy' look may also be a huge benefit in that it won't highlight every speck of lint or footprint etc. as much as a more solid coloured tile.