FIRST Choice is an extra bit to the KoP where you get more choice (hah!) in what you receive.
I'd advise you read
http://www.usfirst.org/roboticsprogr...pdate-for-2015 ASAP
Then get your password from TIMS and go to
http://firstchoicebyandymark.com/everything/ to make your priority list.
For a rookie, this:
http://www.chiefdelphi.com/forums/sh...1&postcount=10 is a good start. After that I'd add more motor controllers (fc15-034, fc15-118, fc15-019), then the Snow Blower Motor and Seat Motor (fc15-003 and fc15-037) and tools such as the multimeter etc (if you don't already have them).
Get this done ASAP as it will close in a little over three hours.