Just a few questions about winterizing (noob)

[bad]

I'm considering the following remote starters...

http://www.amazon.com/Crimestopper-R...9770500&sr=1-4

http://www.amazon.com/Crimestopper-S.../dp/B001UHAF84

http://www.amazon.com/Ultrastart-U12...9769162&sr=1-1


I just want to get a package that is gonna have everything I will need to install.
I want to be able to start the car from a little over 1,000 feet, unlock the two doors and hatchback also, and start the rear defroster and heated mirrors if i get them. (I have an '08 LB)

I don't know if I have an S or not. It has power windows and locks and an aux in and power mirrors.

My mirrors take forever to defog in the morning. Do the heated mirrors defog them as well as melt ice? Or does anyone know of a alternative solution to this problem?

My current tires are yokogama p185/60r15 84t. Can anyone explain what that means? They are on steel rims.

I want to buy snow tires with another set of rims. I will buy alloy if they are close to the same price as steel and then switch the tires I have now with those alloys (to not ruin the alloys in the wintery salt)... but if I just find steels to buy what are a different variations of the numbers I typed above what numbers will work for my vehicle?

THANK YOU IN ADVANCE AND THANK YOU TO CTSCOTT WHO HAS BEEN ANSWERING ALL MY QUESTIONS BECAUSE I JUST LEARNED HOW TO POST TODAY!