Gutted!
Tell you what'll hurt most, when they write it off and offer you stupid money for it. Id just spent about £500 on brakes, belts etc for my 172 when it got written off, the insurance companies aren't interested in this, they just pay you what similar ones are going for on AutoTrader. Another little tip, dunno if you've time but any little dings on it try get them knocked out, mine had a trolley dent on the boot - they knocked £350 off the valuation because of this and it would've cost £50 to repair it.
Finally, get everything you realistically can off it - im not saying strip it but anything you can take and put an older/worn one on eg exhaust, door bullets even! The Turini centre caps are worth £20, and they just pop off! If you get the car back can always pop them back on! I never got the chance as i never saw it again