Well since you have been doing your research i'll throw some info at ya.
The jgs manifold is good.. he made something like 350 HP with on his SOHC. If you can weld... just get the kit and then you can place the turbo flange where you want.
Jordan gladman sells a SOHC manifold every now and then. Alot of SOHC guys including me run them... 3 years later and its still fine. Search ebay and the forums for this one.
You can get the DP with the jgs mani or make your own. Its not that hard to do if you can weld.
Fuel injectors (top Feed) can be sourced from many difference places. The most common ones used for the SOHC are mazda rx-7 460cc -550cc injectors. They are direct drop into the SOHC rail and are also high impedence so no resistors are needed.
Theres a sticky around here on the turbo feed and return lines with a how to article and all the part #'s in it.
If you want a FMIC just get ebay and make your own pipes.
Get a BOV
You will need some sort of engine management. For your power goals, (which will change once you feel the boost) you should start out with just a safc II and retard base timing a little. That will keep the engine safe in boost but still be a fun DD. You can also do the the ROM tuning on the SOHC much easier than the DOHC if you want more info on that go to
http://www.eccs.hybridka.com
Get a few gauges to monitor whats going on with the engine. oil pressure, boost, engine temp oil temp if you want.
You will need a stronger clutch. I recommend the act SS clutch.. they are known for being really strong and take alot of power.
I'm sure I forgot alot of stuff but since you have been searching the forums you have a good idea of what you need.
Good luck! Let's see another boosted KA24E