Cable Lugs or 1/0 cable

Originally setup to just run a small coffee grinder, we're now trying to pull 70ADC from the batteries to run an induction hotplate.

For some reason, these things always seem to get out of hand ... :R

Anyway it's time to upgrade the cables to and from the 1000W inverter. (And maybe later a 2000W inverter will happen.)
Was thinking about 1/0 cable, about 8-12' depending upon routing.

The old cables used simple tinned copper lugs with a V-crimp made with a "Heavy-Duty Hammer Crimper" from Del-City. And lots of electrical anti-corrosion paste, also from Del-City.

Would similar V-crimped lugs be adequate for the new 1/0 cables? Or do they add too much resistance at high loads? The old cables do seem to have more voltage drop than I predicted based solely on the cable length and size.

Alternative lugs might be the Fusion solder lugs. Not cheap, but I only need 4 and still cheaper than a $200-300 crimping tool.

And then I hear of people using thick walled copper pipe? And solder?

I would rather cut and lug the cables myself as I'm not exactly sure of their routing.

Thanks.