2000 Celica GT alarm/remote start

hey guys, im new here and i honestly don't understand 90% of the tecnical talk here thus meaning i have a few questions

infromation:

2000 GT Celica Auto with no Car security system watsoever.Im am gonna get a sound system in about a year so i figure i need security first. Planning on getting a DEI product hopefully and looking in the 300-500$ range

1st question: I was reading previous posts and they mentioned about a celica "Starter grind." How common is that in the remote starting Celica? ( cause i really want it)

2) Is expecting to pay 350 for a system and 150 for install a reasonable estimate for me?

3) I want to also be able to have window close/open capibilities. Will i need to buy something else in order for that to work and how much more labor does that involve?

4) Do any of you installers live in the Wheaton, Illnois suburb area who would like to sell and install one for me? I was thinking about going to Evergreen Park where Fox Collision & Security is *they have an MECP guy there apparently* or just go to this Ziebart in nearby Lombard.... (i would be happier if any of you guys lived or worked near me)

5) how long will it take? Can i expect to go there, pick the system, sit for 3 hours and then drive away in my secured car? or is it more like 2 visits?

thanks guys for all your help