I think being OCD is going to benefit you on the wiring. There's nothing like seeing mounds of spaghetti strung halter skelter from front to back. Add in twist on household connectors and you have an award winning job. NOT! When I go to SEMA and other shows, I'm always on the hunt for how the wiring is done, routed, loomed, connected etc. Same with plumbing. I highly recommend you spend some bucks on tools for the job. Generic electrical pliers don't work for me. The one set from Snap On? I have get used for stripping and cutting of machine screws. I have a set from Pertronix that contain multiple dies which cover a wide range of connector types including plug wires. From there I have a pair of units from American Auto Wire that are specific to old car type of connectors, aka Packard 56. Used on GM, Mopes and many other domestic vehicles. I've found they do the best job of all of mine for that connector. They crimp without crushing the terminal. The Pertronix ones do so so but need the wings of the terminal pre rolled over to get the ball rolling. But they can still crush. I was looking at spending the dough for a Packard type some years ago made by Tyco. The are a tool, part and supply company for the manufactures. The one they make was almost $2K just for that type. I was not doing enough wiring to justify that so the AAW unit gets the nod. I also have one for Molex connectors. That one I need for the AEM ECU I have for the engine which was supplied by Indy when they built the engine.
Get ahold of a butane soldering iron. And for the refills, make sure they do not contain oil otherwise the torch gets plugged up. That works great for doing up to 14ga connections, unless its multiple wires in one connector. Bigger than 14 or multiple I use a commercial Weller gun, think it's a d650[ need to verify]. Use that for multiple wires or up to single 10ga. You don't want to sit there waiting for the connector/splice etc to heat up forever as it can jack up the wire and insulation. You want to get in, get out so you need fast/quick heat. Bigger than 10 is for the propane torch. Oxy/Acet gets used for battery cables. The solder I use is around .040 diameter. It melts at the same temp but since it's smaller it happens faster than with the bigger stuff.