Yeah, your stock F22A1 has 135 horses, and the F22B1 has 145. Not a huge gain. Single-cam VTEC is pretty much worthless. It exists solely for fuel economy.
If you're really interested in pulling power out of a single cam engine (which isn't easy to do), just modify the engine you've got in there. Do those things you mentioned to the engine you've got and save yourself the time, money and trouble of swapping in a very very slightly better engine.
Or, consider this....if you really want to swap an engine, spend a grand or $1500 and get yourself an H23A1 out of a Prelude Si. It'll bump you up to 160 horsepower and give you at least 20 more ft-pounds of torque.