I wouldnt worry too much about about the problems you mentioned. Cam gear cover isnt super important right away. You just dont want anything getting caught in the belt. You can find the covers all over the place. Funky idle seems to be the norm. My car idles wierd before it warms up sometime. Could be something as simple as needing to raise the base idle a little bit (as simple as turning a screw) Pull off the intake and check for shaft play on the turbo. if the car pulls strong and shifts smoothly, id give it a shot at that price. Little bullshit problems are bound to arise down the road. But hey, Thats half the fun isnt it? Plus youve got many people in your area who would be happy to lend you a hand!