MY #1 REGRET in this hobby is that i didn't get my tank drilled before i went ahead and filled it.

i started out as most people do, sumpless. i have the same 65G display, and after headache after headache, i realized i needed a sump/refugium. honestly, having an HOB siphon overflow box keeps me up at night sometimes thinking i will wake up to a flood. so if i were you, i would seriously plan on going with a sump and having a drilled tank now, before you fill the tank and get going, then decide to have a sump later and then need to use a HOB siphon overflow box. if you plan ahead now, you won't have the same regret.

another +1 for drilled, I wish I had more holes in my tank :(