Don't forget there's the possibility of a myriad of other parts
It looks like the main damage is above the crash bar but until the chassis legs are checked damage to them can't be ruled out
Other things that you need to check
Water Rad
Fan housing
Charge cooler Rad
Oil cooler and hard lines
Power steering cooler
Various brackets that support above coolers
Aircon Rad
Aircon dryer and assorted hardlines
Horns
Bonnet latch mechanism
Slam panel
Vertical centre support stay (bonnet latch mechanism is bolted to it)
The front wiring harness
The relay box and relays that are attached to the slam panel
Query main fuse box and main wiring harness
Query overflow expansion bottle
Query windscreen washer bottle
Query air box/intake system behind the n/s wing
Query Wheels and particularly tyres could easily have taken damage
If the wheels are damaged you're into a world of potential suspension damage pain
If everything really has been pushed back to touching the engine
Query Turbo
Query down pipe/catalytic convertor
Query exhaust manifold
Query Turbo water and oil feed pipes
If there is chassis damage then
Query radiator support cross member
Query sub frame damage
Query engine mounts
There's probably more stuff that I've overlooked too
Sorry to sound brutal but that's the sad reality. Its easy to look and think wings/bonnet/bumper and all will be well. In reality there's plenty of other things glued to the front of the car and if a lot of them are damaged its going to get time consuming and hence massively expensive if a garage has to fix them
By your own admission you're perhaps not ideally suited to coming up with a realistic assessment of the damage. Either get an estimate from a garage or contact your local vehicle assessor and see if you can commission an in dependant assessment (try here for a local outfit
http://www.iaea-online.org/find-an-engineer/ )
If you go with a garage be upfront about the need to use salvaged parts (at your own risk). At that stage many will tell you to go forth and multiply as its a potential pain in the proverbial for them. Anyone who hasn't shown you the door at that point might be of use. Personally reccomended places are also worth their weight in gold so its worth asking that friend/relative who hasn't grasped the not a bumper car idea if they've had good service anywhere