in my opinion £5k is a very good price if you can get it for that, especially if the inside is as good condition as you say the outside is, if its hpi clear and everythin works, and u've checked everything that this forum advises you to look for (ball joints, even tyre wear, cd player errors)
bear in mind your 60k service advises the cambelt, plugs and possibly water pump while they're at it, its an expensive service,
£6k to me would definately be worth considering...