your cam options are stage 1 aftermarket and type r from integra or civic. They will let the head breath better giving you a little power, but at the same time you will loose a bit of compression, losing a smaller amount of power. It's a gain, but better if you get the compression up a half point or so. Losing a layer on the head gasket and type r = perfect upgrade.
And building a B16 is not a waste of time. It's all relative. K series guys will tell you building any b series NA is a waste of time.