So I'm ordering a PFC next week and have some ?'s

[DrtyRat]

I'm gonna order my PFC for my s14 sr next week and I'm wondering a few things.
1. I know its a "plug and play" system that I can install and start the car up with, however is it safe to run it like this until I can save up to get it tuned?
2. I know that it has preprogramed settings for exhaust,fmic, etc. that can be controlled through the commander. My question is how easy is it to input this via the commander. Could a noob like me navigate the menu? Meaning, is it pretty straight foward?
3. Does it control the VTC engagement on the engine? This is not as critical but I was curious about it.

Please answer as honestly as possible. I don't need opinions on other ecu's that can be had for a few more dollars or those for a few less. I had been seriously considering the Haltech that johngriff has been pushing lately but I fried my ecu and I need to get the car running right asap. Thanks in advance for any info.