Quote for repairs to a Infiniti J30?

[myclass2010]

I am receiving a Infiniti J30 for my senior years of high school. The car looks really good, no accidents. I need to change the head gasket seal, the fuel injectors, and the starter and replace the air filter. Also I need to get the outside door handle fixed as it won't open the driver side door from the outside and the driver side window is completely off track, but the motor still works fine. How much could I expect for these repairs to cost me so I know how hard I need to work this summer??