Australian flying into beijing for two nights then onto Lhasa Tibet for a 10 organised tour.

I am considering flying into BJ, staying two nights to see The Great Wall etc, then either taking the train to Lhasa/Tibet for a 10 day tour with a travel company to Tibet or flying to Lhasa. Then when the Tibet tour is finished, travelling back from Lhasa to BJ where I plan to stay overnight before taking a flight back to Perth. is there any type issues with this plan. i would be applying for it once the flight and beijing hotel is booked.