It's really what your eventual combo will want? If your head flow is mild, and the compression ratio can handle it, you can even go milder? Could sound like a stock engine and still run easy 13's in a regulation weight A body with low 3 or even high 2 gearing in my opinion.
It's really going to depend on the components used, heads, compression, bolt on's, etc, and how much performance you're actually looking for?