I will be using the method as recommended but a stupid question first . The alligator clips clip onto the #6 screw right?

And I will be needing two sets of these pairs (2 positives, 2 negatives) one for the starter and one for the charger.

Looks simple enough even I could do it

All those connections can be gotten at Carr Hardware correct? That would be the easiest place for me to get to tomorrow.