Wow thank you for all the help guys!! You all have been so helpful. As a final check, CrossRoads, would the example transistor you linked be fine for what I'm looking for? Is:http://www.fairchildsemi.com/ds/MT/MTP3055V.pdf
just as good? I can have that transistor here by Friday off eBay which would be great!! If not I'll do some searching on DigiKey for a better one following your specifications.
And last, what resistor should go before the MOSFET? I feel like I ask this question too much but I want to make 100% sure I have everything correct before I begin building my LED strip!!