Without the key in the ignition to unlock the steering wheel, not sure far anybody is going to get with your 4Runner. And if they know how to defeat that, they probably don't give a rat's rear end about your remote start anyways.
Both Viper and Compustar have the ability to unlock using your smart phone.
I had my Viper remote start installed at Abt Electronics in Morton Grove. They pulled their salesman magic on me, pointing out that if I came back to have anything else installed, it would be another $65, as opposed to adding the SmartStart electronics of $100 right then. It worked, I had the extra electronics installed. Then I signed up for the smart phone too, which is billed by either the year or three years.
I use LastPass on my smart phone, and it can be annoying to log into SmartStart. SmartStart has both email/password, and also a PIN. Never really sure what its going to ask me for. And then I could have sworn I messed up the password and it let me start the car anyway.
You might want to ask about having the windows go down; search the forum too; there's something in Techstream. I am not keen on it. I park my 4Runner in the summer such that the rear window is cracked about 2", just enough to let the heat out, yet unless you are looking hard, you don't see its open.
I liked the Compustar T1 looks, but wasn't 100% sure on either Armando's on the north side of Chicago, or having to take a day off to get to Valpraiso Indiana. Abt Electronics took back a GE frig that I was just not happy with, no questions asked, although it helped I was picking out another unit to replace it from their store.
Whether to get the smart phone thing or not is highly dependent on how far and thru what the remote has to get thru to your car.
As I recall, you have to get a remote regardless of the smart phone thing.