IMO, bag all the fittings & use crimp connectors for the big stuff, and soldering with heat shrink tubing for the small wires----when you actually mount the wing. Leave enough wire to pull up past the wing when connected, plus some extra that can be looped for a rewire, should you ever have to pull the wing.
This is less weight, and most likely a better connection.
I went through all the connection stuff too, on one wing and decided against it on the other, after reading many pro's & cons. I ended up cutting several fittings off, when finally mounting the wings permanently. I think the small servo wires (I have an aileron trim servo) have a better connection this way, and I trust my higher amperage heated pitot circuit also, by using a tried and true crimp connector.
BTW--- aircraft style crimp connectors with the additional crimp area over the insulation, are the way to go.
L.Adamson --- RV6A