I've worked on a very similar project and can give you results very quickly. The project I've been involved in uses an SD card to log data from three sensors (an IMU, and 2 force sensing resistors), and includes a TFT display as well. I've designed and built the whole circuit myself, so I know the kind of problems that corp up. Also, since it is my summer vacation, I shall be able to devote all my time to this project.
I've been into this sort of electronics for the last three years, and possess the required skill set for the task. I've led my college robotics team, and I know how to be able to work to deadlines. And, for me it is not more about the stipend, but the work itself that interests me, so I believe that passion will ensure that I deliver, and in time.
I'm okay with it even if you do not pay me a lot (even a 30$ would do).
If you're interested I could send you over some of my code samples so that you get an idea of my skills. I've been coding on the Arduino for 3 years now, and hence it shouldn't take me time to deliver the needed.