Sorry to hear about your accident. Actually all the parts that you say that you need to make your repair really shouldn't be all that expensive (especially if you can find a salvage yard that has a XF with front end damage).
But I was just wondering if you have had a good repair shop check out your car for additional "chassis" damage?
One time a good friend of mine hit black ice while we were on the interstate, he did a 180 and hit a center divider with his right rear wheel. It really wasn't that hard of a hit, but even after replacing all the right rear 1/4 suspension parts, he never could get the rear end aligned up correctly, and he wound up selling the car.
Of course this is all worse case scenario.
Good Luck