septillion:
As a general mosfet I like to use IRF7313's.
Really? I took a look on Mouser and Digi-Key and found only an SO-8 package. That's not an easy package for an obvious noob to use.
Plus, it's only good up to 6.5A and 30V. Cheaper, and far more versatile and easier for a noob to use, is the 55V, 47A
IRLZ44NPBF, a nice Logic Level MOSFET I learned about on this forum (BTW) 
But, still, there are far too many unknowns to even be making recommendations, at this point, doncha think?