Power isn't cheap, it sounds like you're looking for around 200 whp. Ls/V is cool, but it will cost building it, plus you need to make sure it's tuned well. Why not just find a Gs-R swap and build that on the side?
Plus, you're going to need to upgrade your gearbox, the ls box is crippling to acceleration. Plan on spending around 3 or 4k is you don't have connections for engines, tunes, parts, and builds