SOLDER ALL YOUR WIRE SPLICES! IT IS THE ONLY WAY TO DO IT!
You don't want cheap butt connectors and the like falling apart on you leaving loose ends everywhere and possibly causing the demise of your wiring and/or electronics.
After the wiring was done, I spent the rest of the day putting all the little things, like fuel line crush washers and vacuum lines, back on. Once everything was tip-top up top, I concentrated on the bottom where I still needed to install the oil drain plug, accessory fan belts, exhaust system, and clutch bleeding.
Clutch bleeding was a breeze, so was getting the exhaust back on. But I had to go to the car parts store like 4 times to figure out the right belts I needed, since the exact ones the computer listed were out of stock and would have taken months to get.

After those were taken care of I put the oil plug in and filled 'er up! I also started bleeding the coolant out and double checked all my wiring and components while it was burping.
After everything was done, I got in the cab and unplugged the fuel pump. I wanted to turn over the engine to circulate some oil since the engine sat for about 8 months dry. A few hours prior I was testing the fuel system by running the pump with the engine off just to check for leaks, which there were none! Some extra pressure from the leak test shot some fuel into the engine while I was cranking for oil pressure and it sputtered a little bit. At that time, I knew it was gonna fire right up! It was trying to with what little fuel that was in the rail! So after about 10 seconds of oil priming, I plugged in the pump and turned the key.
First shot, sputter and die... OK, still some air in the fuel lines...
Second shot, VVRRRRRROOOOOOOOOOOOMMMMMMMMM!!!
I was so stoked that I just wailed on my horn for a few seconds! All my supporting neigbors came out to give me the thumbs up!
Let me tell you, this car runs! And it runs well! The C-50 is a close-ratio gearbox designed to help the low torque 4A-GE accelerate. When you mate it to a GZE, it'll put out some respectable numbers! The C-50 redlines 2nd gear at 59 miles per hour, and with that SC pumping, it got there VERY fast. We're talking under 7 seconds, like 6.5-6.8. This car is definately a runner! It really puts the power down well, but if you're not careful, it'll smoke up the tires without breaking a sweat!
So I finish up by saying THANK YOU to all who offered me their advice and support. I COULD NOT have done it without all of the kind words and advice gven to me during the hardest times of the process. I owe it all to the wonderful MR2 community!
Here is the finished product!

And my custom fuel selector switch and SC light:
Good luck to any who do this swap! It's not too difficult, just take your time and make dure you do it right! Working at a leisurely pace, I accomplished this in 7 days and 4 hours