They're all right mate...don't do it, you will wonder why on earth you wasted so much money doing it when you could have done something decent to it, or bought a better car, or gone on holiday etc etc. Seriously, look at that German members car. Looks awesome, I'm fairly certain you could do that for a lot less than the price of that kit. I'm not up on the recent prices for 2nd hand parts but, Front bumper £100, skirts £100 max(already painted) Good suspension coilover kit £500. Bodywork (Front Bumper sprayed and other colour coding £150 max.) £100 quid to get the bumper fitted well. £950 tops....
Obviously you'd have to factor in some Euro wheels which I know can be expensive but I'm not really up on them. Say £900-£100 (Don't necessarily have to be full on euro, you could use spacers to help achieve the look if the wheels are getting too expensie) Or just get a nice set of normal wheels, don't have to go Euro, either way it still leaves you with change for a good holiday/the added insurance.