NV of Macomb Twp

My package includes just the one interior light, but I want to add at least 2 or 3 more in the rear cargo area. I'm reasonably good with wiring; should I expect this to be a difficult project, based on your experience?

I'm considering purchasing a 2011 NV S commercial version...though it looks like it'll fit my needs, I'm wondering what kind of MPG I can expect from the V-6 with the 5-speed automatic? There's nothing on the NV site from Nissan that mentions mileage...