Am I Too Paranoid?

[surf twang]

We're still looking for an H2 and my wife still wants the 2006 we found with 54k miles. My biggest concern is with the electrical system. It has aftermarket fog lights, extra lights on top, aftermarket nav, rear seat DVD system and a backup camera (that doesn't work). The first time we tried to test drive it the batter was dead.

I've read the posts about dead batteries and current drain and I'm afraid we're going to have too many problems with this particular H2. The truck has otherwise been well maintained. Am I being too paranoid?