Jase,
Wiring is like gyprocking, leave it to the experts.
You wouldn't believe how fast electricity is when you are trying to get the terminal off the battery before the wire you shorted out goes up in smoke
You can get premade looms that are economical and all marked up but may need alterations to fit neatly.
I still think its best to save money elsewhere. You will save a lot more by good buying and using the experience gained by others on this site.
Ledge, glad it ended well.
Phil