That's next on the list of relay upgrades I hope to provide.
People are welcome to do this all at home. Some of it comes down to what is your time worth in an area that may provide some discomfort. Just buy quality products and don't skimp on wire size. Use a good crimper/open barrel connectors and soldering is not necessary except under special circumstances. I've rarely seen a well crimped open barrel style connector pulled out. You have to really tug on them to get them out.
Electrical scares a lot of people, it's that simple. Find the approach that works for you and run with it.
