Also, the car has a salvage title because the front bumper had to be repainted due to an accident, any input on that? He had a mechanic check it, who said everything else was fine and I could do the same before buying it.
They don't issue a salvage title just because the front bumper had to be repainted. The car was wrecked, the insurance company deemed the car totaled, the car was then sold by the insurance company to someone who rebuilt it. That's why it has a salvaged title.
But, as long as car has been repaired correctly, it does seem like a good deal.
As for the alarm question, not for sure, I'll let someone with the knowledge answer that one.