You can connect any where you want
But max voltage and max charge are archived when using the shortest wire run possible
I have a long wire run and I do not get as much charge as other members with the same amount of solar, in some cases members with less solar get more amp hrs than I do
Do it your way, and be ready to change it if the batteries are not getting fully charged
I'm not condemning your actions, but I would (and did) run new wire all the way to the batteries,
Mine was still a long run, but I ran #4 ga wire, which is very likely larger than what is connected to your converter, (you Will be lucky if it's 6 ga) and I should have used something larger
