Everyone has their own definition of "streetable", and what they want in terms of driveability and drive characeristics for their engines and vehicles. What one person thinks is streetable, might not suit the needs of another person. So its hard to tell you specifically what you will like or need, not knowing what really suits your real personal taste and needs. There still might even be some experimentaion needed on your part to find the happy medium between parts for power and smooth driving like you mentioned. When you are talking about doubling the stock HP of an engine, at some point you might possibly cross the line beyond what you thought you would end up with to get there.
