Getting Viper 790vx ques about add-ons

Ok im getting a Viper 790vx installed in my 2003 4runner on tuesday. Some as*h*le broke into my car on friday and stole my headunit (factory alarm didnt even go off). It they could have only waited a week longer i might have caught them. So the alarm is getting install now instead of at the end of the week like originally planned.  

Questions

1. Will the headlights and interior lights turn off when the alarm is armed like he factory alarm does?? can it be easily wired like this?

2. My 03 4runner rear window can be lowered with the factory remote but not raised. But it can be raised and lowered from the rear key lock and the button located on the center console. Will i need a window roll up/down module to have complete up/down control of the rear window from the remote?

3. What is dei's range extender antenna worth the extra money????

4.How is the range on the viper 790vx?

5. Is it hard to install other sensors like Invisibeam Field Disturbance Sensor 508D and the Audio Sensor 506T? If i was to just get the alarm installed and do the rest of the sensors myself is it a big deal with someone with no experience?

6. I want all 5 window to roll-up when the alarm is armed and to be able to control the 4 windows up/down with the remote and the rear window up/down with another button. Does the viper 790vx have enough channels to do this.

7. I enjoy working on my 4runner and all of my past vehicle. I would like to install the window roll-up modules for the 4 doors myself. I know it is time consuming but it is difficult?

Thanks for all the help

Chris