It's a difficult one.im worried about my price already had someone email me saying i will need to easily drop £1500 off it to get a sale :S, am i being too abitious at 4000?
If it was relatively standard, yes you'd need to drop it by ~£1,500. I got mine for £2,900 from a dealer, it's same year as yours, same standard spec and with less miles (26k when I got it in April).
BUT...
Yours is no run of the mill Ibiza 1.2. Yours is certainly more desirable to look at and has the unique appeal. You've clearly spent a lot of money on it and it shows, the car looks absolutely class. I think the uniqueness give it extra value. To someone who can afford to insure it with all the mods, and wants something that looks the dog's danglies, it's the perfect car.
Give it a bit longer yet, it's been for sale about 5mins.