You also have to include the following:
Landing fees,
Trevor Thom books and Confuser,
Charts, Computer etc,
Headsets if you buy one,
Exam fees - £30 per ground exam plus £150 for the GFT,
Ground school at £20 per hour if you take it,
Plus, very few people manage to do it bang on 45 hours so you will have to add a few hundred quid there.