Hi and welcome to NICO Club!
Congrats on your new ride.
If your V8 swap is only a year away, then I don't recommend spending (wasting) much time and money on the current engine. You could be saving for the V8 bits, building the car to handle a V8 (suspension, brakes), or improving your driving skills with autoX and car control clinics. IMHO of course.
Maybe you just like to build engines, so the car and the driving don't matter as much. If so, that's cool too; proceed with tinkering! Here's a neat article about an NA build.
http://www.nicoclub.com/archives/natura ... 240sx.html Though I don't see them going the ITB route. Check our engines sub-category for some old threads maybe. I don't think MAF-less is an option with the factory ECU. Here's an old write-up article for ITB (the pictures are gone

)
http://www.nicoclub.com/archives/instal ... a24de.html