Wide,
That 230, with the mods I suggested, would do just fine in your car. Of course a bigger engine would give you more power, acceleration, etc. - that's logical. But in keeping the original engine the few hop up goodies in the post I made earlier would probably give your car more than adequate low to mid-rpm torque. Since the 230 has such a short stroke you could even go one step up on the cam that you suggested.
A healthy, balanced 230 with some mild street performance mods is comfortable turning 3k all day long. Cruising range in the 2300-2800 rpms would be optimal for longevity and fuel mileage.
-magic mike-
