definently get the I/H/E then cams out of the way first. From there, like Kai said, work on ignition stuff, then, if you are planning on staying with all motor, work on your internals.

If you plan on staying with the B18b as well as N/A, be forewarned to make it get some decent power, you will have to do a lot of internal work. It might not even be worth it to you.