Did you have the tensioner ticking of death? 2010 is a common problem. There is a class action lawsuit you should research. Land Rover knows this is a problem until 2012. I was going to buy a 2012 but they couldn't verify the tensioner and guilds were replaced. Thats a 2k job, make sure you replace the oil pump.
You probably bent some intakes. Yes you will need to lock the cam pulleys for setting. Pressurize the cyl and see where the air leak is coming from or see if you can access a smoke generator. It will either come out the intake, another cylinder or the exhaust. Either way, heads have to come off. There is some youtube stuff out there.