I want to get an alarm for my car. I dont need remote start or window roll up/down, although I do want trunk open. I think I want to go with the viper 1000. Is that a good choice for my needs? I also want to add a proximity sensor, tilt sensor, and a battery backup siren (or two). How much should I expect to pay for a setup like this (parts and labor) from a reputable shop? There is an alarm on there already, but there is something wrong with it. It goes through batteries in the remotes like crazy, so I would want them to take that alarm off. I guess some stuff would already have wires run, so would that alarm being there (and having to remove it) make the job overall easier or harder?