Well anything is possible but youd have to drill the holes and that's probably not a possibility since your tank is already up and running. A pre drilled tank is always ideal that way you don't have to worry about leaks as much.
Can you tell us more about your tank?
Feeding, flow, what kind of substrate and what kind? Protein skimmer? How much live rock do you have? What type of fish?
I didn't even watch the video till now. Yea tank looks nice but that tang will outgrow it quick or get stressed like forbis said.
I thought though your tank crashed and you were restarting and taking it slow. Or am I thinking wrong person?