Hi mate,
For the FET the most important things that you need to look at are the absolute maximum characteristics, typically for the N-type MOSFET for boost converters look up IRF1405 or IRF3205, etc... See if they match up. With L and C you need to find an inductor that can handle the current. The L and C that you choose also determines the current ripple. As a general rule I would go with a large capacitor (with proper voltage rating possibly 63V or more). For more information on calculating the values look up Power supply cookbook by Marty Brown. Its a good book.
Hope it helps
K