Wheels, bearings, & trucks for skateboard - help?

It's time for me to buy new wheels, bearings, and trucks for my skateboard. I've never had to buy them before because I got all of my stuff from my neighbor when he went to college. I have plenty of decks I can use, but I need the other stuff. I'm gonna buy online, and I don't want anything too expensive.

This is what I'm looking at. Tell me if it looks okay.

Wheels- http://www.zumiez.com/skate/wheels/bones-big-blue-and-black-53mm-wheels.html (They give you 4, right...? it's not $25 per wheel?)
Bearings - http://www.zumiez.com/bones-reds-bearings-1.html
Trucks - http://www.zumiez.com/skate/trucks/thunder-sonora-black-truck.html (I know these are sold separately.)

Thanks for your help!