New to solar. 100w kit upgrade to 200- 400w

Hi, we have the harbor freight 100w solar kit. Found here: https://www.harborfreight.com/100-watt-solar-panel-kit-63585.html
we bought an additional 100w panel for a total of 200w together.
Both panels are plugged into this 400w adapter/junction found here: https://www.harborfreight.com/400-watt-universal-solar-connector-68689.html
We might get 2 more 100w panels for a total of 400w. As of now, I know we need to upgrade the charge controller to 400w. (To future proof).
We have a 35ah battery from harbor freight found here: https://www.harborfreight.com/12-volt-35-amp-hour-sealed-lead-acid-battery-64102.html
We might get another 35ah battery and hook it up in parallel...
Do we need to upgrade the battery clamps and cable for 200w/400w?
we bought an additional 100w panel for a total of 200w together.
Both panels are plugged into this 400w adapter/junction found here: https://www.harborfreight.com/400-watt-universal-solar-connector-68689.html
We might get 2 more 100w panels for a total of 400w. As of now, I know we need to upgrade the charge controller to 400w. (To future proof).
We have a 35ah battery from harbor freight found here: https://www.harborfreight.com/12-volt-35-amp-hour-sealed-lead-acid-battery-64102.html
We might get another 35ah battery and hook it up in parallel...
Do we need to upgrade the battery clamps and cable for 200w/400w?
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