The HD7770 is going to bottleneck that system heavily. While AMD does build decent cards (even when not for Planetside 2 due to SOE directly cooperating with NVIDIA) , this Radeon is very low budget and old and does not fit to the 3770 at all.
Do you want to use the 3D glasses for gaming too, or just for movies? The price of that system would also be interesting to get an idea if it was worth it.
Furthermore, if you want to buy PC hardware and you are from the UK, you might want to think about buying stuff at a German exporter in Euros like www.mindfactory.de, as that can save you loads of money you could invest in an even better GPU, depending on what you want to buy. All the manuals delivered are in English or multilingual anyway. The course is € 1 = GBP 0.8133 today.
The system Juggernaut showed is quite good. I recommend you watch out for a GTX670 reference card in sales, I got a GTX670 from Club 3D in the reference design for € 333 which are just GBP 269 !!! I put an Arctic Cooling Accelero Twin Turbo II (€ 30) on it and overclocked it, so now I have a card that is as fast as an ASUS GTX670 TOP with a better (more silent too) cooler including voltage cooler and ram cooling for one-hundred less.