Which of these improvements would help sell my house quicker?

1) Double glazing in the front to brighten hallway and make attractive first impression £1500

2) Double glazing at the back £1500

3) Put gravel over our crazy paving patio £200

4) redecorate the interior painting the wood and making it white again

4) a new bathroom from our current blue to a clean and crisp white £1000

5) replace the work surface and tiling in kitchen £300

what would you prefer done in a house you were buying????